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Django tutorial part2 went wrong

I'm following the tutorial and I received a traceback ~>
Question.objects.all()Traceback (most recent call last): File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 423, in execute return Database.Cursor.execute(self, query, params) sqlite3.OperationalError: no such table: polls_question The above exception was the direct cause of the following exception: Traceback (most recent call last): File "<console>", line 1, in <module> File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 256, in __repr__ data = list(self[:REPR_OUTPUT_SIZE + 1]) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 262, in __len__ self._fetch_all() File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 1324, in _fetch_all self._result_cache = list(self._iterable_class(self)) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 51, in __iter__ results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1175, in execute_sql cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 98, in execute return super().execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute return self._execute_with_wrappers(sql, params, many=False, executor=self._execute) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers return executor(sql, params, many, context) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__ raise dj_exc_value.with_traceback(traceback) from exc_value File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 423, in execute return Database.Cursor.execute(self, query, params) django.db.utils.OperationalError: no such table: polls_question >>> from django.utils import timezone >>> q = Question(question_text="What's new?", pub_date=timezone.now()) >>> q.save() Traceback (most recent call last): File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 423, in execute return Database.Cursor.execute(self, query, params) sqlite3.OperationalError: no such table: polls_question The above exception was the direct cause of the following exception: Traceback (most recent call last): File "<console>", line 1, in <module> File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/base.py", line 726, in save self.save_base(using=using, force_insert=force_insert, File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/base.py", line 763, in save_base updated = self._save_table(b/backends/utils.py", line 84, in _execute File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/base.py", line 868, in _save_table results = self._do_insert(cls._base_manager, using, fields, returning_fields, raw) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/base.py", line 906, in _do_insert return manager._insert( File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/manager.py", line 85, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 1270, in _insert return query.get_compiler(using=using).execute_sql(returning_fields) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1416, in execute_sql cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 98, in execute return super().execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute return self._execute_with_wrappers(sql, params, many=False, executor=self._execute) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers return executor(sql, params, many, context) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__ raise dj_exc_value.with_traceback(traceback) from exc_value File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 423, in execute return Database.Cursor.execute(self, query, params)django.db.utils.OperationalError: no such table: polls_question
I did the makemigrations and migrate, nothing changed or helped.
After I included at db.sqlite3 by hand the tables and that gave me another traceback ~>
Question.objects.all()Traceback (most recent call last): File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 423, in execute return Database.Cursor.execute(self, query, params)sqlite3.OperationalError: no such column: polls_question.question_textThe above exception was the direct cause of the following exception:Traceback (most recent call last): File "<console>", line 1, in <module> File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 256, in __repr__ data = list(self[:REPR_OUTPUT_SIZE + 1]) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 262, in __len__ self._fetch_all() File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 1324, in _fetch_all self._result_cache = list(self._iterable_class(self)) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 51, in __iter__ results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1175, in execute_sql cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 98, in execute return super().execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute return self._execute_with_wrappers(sql, params, many=False, executor=self._execute) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers return executor(sql, params, many, context) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__ raise dj_exc_value.with_traceback(traceback) from exc_value File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 423, in execute return Database.Cursor.execute(self, query, params) django.db.utils.OperationalError: no such column: polls_question.question_text >>> Question.objects.all() Traceback (most recent call last): File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 423, in execute return Database.Cursor.execute(self, query, params) sqlite3.OperationalError: no such column: polls_question.question_text The above exception was the direct cause of the following exception: Traceback (most recent call last): File "<console>", line 1, in <module> File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 256, in __repr__ data = list(self[:REPR_OUTPUT_SIZE + 1]) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 262, in __len__ self._fetch_all() File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 1324, in _fetch_all self._result_cache = list(self._iterable_class(self)) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/query.py", line 51, in __iter__ results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1175, in execute_sql cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 98, in execute return super().execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute return self._execute_with_wrappers(sql, params, many=False, executor=self._execute) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers return executor(sql, params, many, context) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__ raise dj_exc_value.with_traceback(traceback) from exc_value File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/pingounica/.virtualenvs/django3/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 423, in execute return Database.Cursor.execute(self, query, params)django.db.utils.OperationalError: no such column: polls_question.question_text
that's my models.py ~>
from django.db import models
class Question(models.Model):
question_text = models.CharField(max_length=200)
pub_date = models.DateTimeField('date published')
def __str__(self):
return self.question_text
class Choice(models.Model):
question = models.ForeignKey(Question, on_delete=models.CASCADE)
choice_text = models.CharField(max_length=200)
votes = models.IntegerField(default=0)
def __str__(self):
return self.choice_text
and my manage.py ~>
#!/usr/bin/env python
"""Django's command-line utility for administrative tasks."""
import os
import sys
def main():
"""Run administrative tasks."""
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mysite.settings')
try:
from django.core.management import execute_from_command_line
except ImportError as exc:
raise ImportError(
"Couldn't import Django. Are you sure it's installed and "
"available on your PYTHONPATH environment variable? Did you "
"forget to activate a virtual environment?"
) from exc
execute_from_command_line(sys.argv)
if __name__ == '__main__':
main()
What am I doing wrong?

Seems like you created your app using the command manage.py startapp polls but I see mysite in your manage.py
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mysite.settings')
Django creates the table names in the database using a combination of the app name and the model name. In your case the app name is supposed to be polls I believe?, but for some reason the app name in your manage.py is mysite.
I suggest you start from scratch and try again with the manage.py startapp <app name> command, be careful of changing any references to the actual app name manually in any of the generated files.

Created objects are not save through cmd in django python

from sabin.models import Task
>>> Task.objects.all()
<QuerySet []>
>>> t=Task(title="dhiraj")
t=Task(title="dhiraj")
t.save()
models.py file
from django.db import models
class Task(models.Model):
title=models.CharField(max_length=200)
completed=models.BooleanField(default=False)
created_at=models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.title
Error says
Traceback (most recent call last):
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\backends\sqlite3\base.py", line 423, in execute
return Database.Cursor.execute(self, query, params)
sqlite3.OperationalError: table sabin_task has no column named title
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\models\base.py", line 726, in save
self.save_base(using=using, force_insert=force_insert,
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\models\base.py", line 763, in save_base
updated = self._save_table(
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\models\base.py", line 868, in _save_table
results = self._do_insert(cls._base_manager, using, fields, returning_fields, raw)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\models\base.py", line 906, in _do_insert
return manager._insert(
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\models\manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\models\query.py", line 1270, in _insert
return query.get_compiler(using=using).execute_sql(returning_fields)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\models\sql\compiler.py", line 1410, in execute_sql
cursor.execute(sql, params)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\backends\utils.py", line 98, in execute
return super().execute(sql, params)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\backends\utils.py", line 66, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\backends\utils.py", line 75, in _execute_with_wrappers
return executor(sql, params, many, context)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\Dhiraj Subedi\ero\lib\site-packages\django\db\backends\sqlite3\base.py", line 423, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: table sabin_task has no column named title

django.db.utils.DatabaseError: ORA-00933: SQL command not properly ended

I am trying to connect the remote oracle database. I have installed clients and added the path to LD_LIBRARY_PATH.
The query and parameters generated are as follows. The query runs in psql, dbeaver. It only fails when running Django.
SELECT "AUTHTOKEN_TOKEN"."KEY", "AUTHTOKEN_TOKEN"."USER_ID", "AUTHTOKEN_TOKEN"."CREATED",
"AUTH_USER"."ID", "AUTH_USER"."PASSWORD", "AUTH_USER"."LAST_LOGIN", "AUTH_USER"."IS_SUPERUSER",
"AUTH_USER"."USERNAME", "AUTH_USER"."FIRST_NAME", "AUTH_USER"."LAST_NAME", "AUTH_USER"."EMAIL",
"AUTH_USER"."IS_STAFF", "AUTH_USER"."IS_ACTIVE", "AUTH_USER"."DATE_JOINED" FROM "AUTHTOKEN_TOKEN" INNER
JOIN "AUTH_USER" ON ("AUTHTOKEN_TOKEN"."USER_ID" = "AUTH_USER"."ID") WHERE "AUTHTOKEN_TOKEN"."KEY" =
:arg0 FETCH FIRST 21 ROWS ONLY
{':arg0': <django.db.backends.oracle.base.OracleParam object at 0x10b8497d0>}
and the error I am seeing is
Traceback (most recent call last):
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/core/handlers/exception.py", line 47, in inner
response = get_response(request)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/core/handlers/base.py", line 181, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
return view_func(*args, **kwargs)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/viewsets.py", line 125, in view
return self.dispatch(request, *args, **kwargs)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/views.py", line 509, in dispatch
response = self.handle_exception(exc)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/views.py", line 469, in handle_exception
self.raise_uncaught_exception(exc)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
raise exc
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/views.py", line 497, in dispatch
self.initial(request, *args, **kwargs)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/views.py", line 414, in initial
self.perform_authentication(request)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/views.py", line 324, in perform_authentication
request.user
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/request.py", line 227, in user
self._authenticate()
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/request.py", line 380, in _authenticate
user_auth_tuple = authenticator.authenticate(self)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/authentication.py", line 196, in authenticate
return self.authenticate_credentials(token)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/rest_framework/authentication.py", line 201, in authenticate_credentials
token = model.objects.select_related('user').get(key=key)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/models/query.py", line 425, in get
num = len(clone)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/models/query.py", line 269, in __len__
self._fetch_all()
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/models/query.py", line 1308, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/models/query.py", line 53, in __iter__
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/models/sql/compiler.py", line 1156, in execute_sql
cursor.execute(sql, params)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/backends/utils.py", line 99, in execute
return super().execute(sql, params)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/backends/utils.py", line 66, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/Users/kishorpawar/.virtualenvs/pl/lib/python3.7/site-packages/django/db/backends/oracle/base.py", line 535, in execute
return self.cursor.execute(query, self._param_generator(params))
django.db.utils.DatabaseError: ORA-00933: SQL command not properly ended
Can you please help me find what could be wrong here?
UPDATE 1:
Oracle version is Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production
UPDATE 2:
I installed instant client libraries of version 11_2 and added them to LD_LIBRARY_PATH.
I am still facing the issue

The FETCH FIRST 21 ROWS ONLY syntax was new in Oracle DB 12.1.
I suggest you upgrade your DB e.g to XE 18c https://www.oracle.com/database/technologies/xe-downloads.html

How to fix MySQLdb._exceptions.ProgrammingError: wagtailcore_site doesn't exist?

Presently I am deploying my website to pythonanywhere everything is perfect exclude the front-side of my website.
I got Internal server error for the front-site then I check out the log file and I noticed this
MySQLdb._exceptions.ProgrammingError: (1146, "Table 'transonhoang$default.wagtailcore_site' doesn't exist")
**NO MATCH**
The above exception was the direct cause of the following exception:
**NO MATCH**
Traceback (most recent call last):
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/utils/deprecation.py", line 90, in __call__
response = self.process_request(request)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/wagtail/core/middleware.py", line 13, in process_request
request.site = Site.find_for_request(request)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/wagtail/core/models.py", line 120, in find_for_request
return get_site_for_hostname(hostname, port)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/wagtail/core/sites.py", line 35, in get_site_for_hostname
'root_page'
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/models/query.py", line 268, in __iter__
self._fetch_all()
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/models/query.py", line 1186, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/models/query.py", line 54, in __iter__
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/models/sql/compiler.py", line 1065, in execute_sql
cursor.execute(sql, params)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/backends/utils.py", line 68, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/backends/mysql/base.py", line 71, in execute
return self.cursor.execute(query, args)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/MySQLdb/cursors.py", line 206, in execute
res = self._query(query)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/MySQLdb/cursors.py", line 312, in _query
db.query(q)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/MySQLdb/connections.py", line 224, in query
_mysql.connection.query(self, query)
django.db.utils.ProgrammingError: (1146, "Table 'transonhoang$default.wagtailcore_site' doesn't exist")
2019-04-24 08:19:06,212: Internal Server Error: /
Traceback (most recent call last):
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/django/db/backends/mysql/base.py", line 71, in execute
return self.cursor.execute(query, args)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/MySQLdb/cursors.py", line 206, in execute
res = self._query(query)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/MySQLdb/cursors.py", line 312, in _query
db.query(q)
File "/home/transonhoang/.virtualenvs/my-blog/lib/python3.6/site-packages/MySQLdb/connections.py", line 224, in query
_mysql.connection.query(self, query)
What is MySQLdb._exceptions.ProgrammingError: (1146, "Table 'transonhoang$default.wagtailcore_site' doesn't exist") meaning?
My step: https://github.com/texperience/wagtail-pythonanywhere-quickstart

sqlite3.sqlite3.OperationalError: database table is locked on django LiveServerTestCase

I am updating project's django version from 1.11 to django 2.0.8. Bet when I run a test which inherits from LiveServerTestCase and getting this error, which says:
sqlite3.OperationalError: database table is locked
The same error acquires on StaticLiverServerTestCase.
Traceback:
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 128, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 126, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/usr/local/lib/python3.6/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
return view_func(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/rest_framework/viewsets.py", line 103, in view
return self.dispatch(request, *args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/django/utils/decorators.py", line 62, in _wrapper
return bound_func(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/django/utils/decorators.py", line 142, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/django/utils/decorators.py", line 58, in bound_func
return func.__get__(self, type(self))(*args2, **kwargs2)
File "/pipeline/source/core/api_views.py", line 21, in dispatch
return super(CurrencyViewSet, self).dispatch(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py", line 483, in dispatch
response = self.handle_exception(exc)
File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py", line 443, in handle_exception
self.raise_uncaught_exception(exc)
File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py", line 480, in dispatch
response = handler(request, *args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/rest_framework/mixins.py", line 48, in list
return Response(serializer.data)
File "/usr/local/lib/python3.6/site-packages/rest_framework/serializers.py", line 765, in data
ret = super(ListSerializer, self).data
File "/usr/local/lib/python3.6/site-packages/rest_framework/serializers.py", line 262, in data
self._data = self.to_representation(self.instance)
File "/usr/local/lib/python3.6/site-packages/rest_framework/serializers.py", line 683, in to_representation
self.child.to_representation(item) for item in iterable
File "/usr/local/lib/python3.6/site-packages/django/db/models/query.py", line 272, in __iter__
self._fetch_all()
File "/usr/local/lib/python3.6/site-packages/django/db/models/query.py", line 1179, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "/usr/local/lib/python3.6/site-packages/django/db/models/query.py", line 53, in __iter__
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
File "/usr/local/lib/python3.6/site-packages/django/db/models/sql/compiler.py", line 1068, in execute_sql
cursor.execute(sql, params)
File "/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py", line 68, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/usr/local/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/usr/local/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 303, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: database table is locked
What can cause this problem? Any help is appreciated, thanks!