Like many, I have reinstalled Anaconda after upgrading to MacOS Catalina. I did not 'uninstall' but deleted the folder (I am not a power user but an occasional user of python).
I did a clean install of Anaconda 3, and updated python to Python 3.8. When I start a notebook, I get the error message "Kernal Error."
Clicking on the "Kernal Error" button, I see the following message:
Traceback (most recent call last):
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/tornado/web.py", line 1703, in _execute
result = await result
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/handlers.py", line 69, in post
model = yield maybe_future(
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/sessionmanager.py", line 88, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/sessionmanager.py", line 100, in start_kernel_for_session
kernel_id = yield maybe_future(
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/notebook/services/kernels/kernelmanager.py", line 176, in start_kernel
kernel_id = await maybe_future(self.pinned_superclass.start_kernel(self, **kwargs))
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/jupyter_client/multikernelmanager.py", line 186, in start_kernel
km.start_kernel(**kwargs)
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 308, in start_kernel
self.kernel = self._launch_kernel(kernel_cmd, **kw)
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 215, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/site-packages/jupyter_client/launcher.py", line 135, in launch_kernel
proc = Popen(cmd, **kwargs)
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/subprocess.py", line 854, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "/Users/Glenn/Applications/anaconda3/lib/python3.8/subprocess.py", line 1702, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/anaconda2/envs/snakes/bin/python3'
But when I type 'python' in the terminal, I see that python 3.8 is installed:
Can anyone help me understand this better? While I am at it, am I running the risk of confusion between this new anaconda installation and the initial one?
Related
I want to use Jupyter-matlab notebooks. I've downloaded Anaconda navigator and followed the steps from this web: http://jmlilly.net/jupyter-matlab Unfortunately, when I try to open a matlab notebook there is a kernel error.
I've been trying re-install anaconda, jupyter, matlab-kernel, change environment python version (2.7, 3.7, 3.8, 3.9) etc. but it doesn't work. Matlab version: R2021b and R2022a (tried both).
Full error traceback from jupyter:
Traceback (most recent call last):
File "C:\Users\lucas\anaconda3\lib\site-packages\tornado\web.py", line 1704, in _execute
result = await result
File "C:\Users\lucas\anaconda3\lib\asyncio\tasks.py", line 328, in __wakeup
future.result()
File "C:\Users\lucas\anaconda3\lib\site-packages\tornado\gen.py", line 769, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\lucas\anaconda3\lib\site-packages\notebook\services\sessions\handlers.py", line 74, in post
model = yield maybe_future(
File "C:\Users\lucas\anaconda3\lib\site-packages\tornado\gen.py", line 762, in run
value = future.result()
File "C:\Users\lucas\anaconda3\lib\site-packages\tornado\gen.py", line 769, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\lucas\anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 98, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "C:\Users\lucas\anaconda3\lib\site-packages\tornado\gen.py", line 762, in run
value = future.result()
File "C:\Users\lucas\anaconda3\lib\site-packages\tornado\gen.py", line 769, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\lucas\anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 110, in start_kernel_for_session
kernel_id = yield maybe_future(
File "C:\Users\lucas\anaconda3\lib\site-packages\tornado\gen.py", line 762, in run
value = future.result()
File "C:\Users\lucas\anaconda3\lib\asyncio\futures.py", line 201, in result
raise self._exception
File "C:\Users\lucas\anaconda3\lib\asyncio\tasks.py", line 256, in __step
result = coro.send(None)
File "C:\Users\lucas\anaconda3\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 176, in start_kernel
kernel_id = await maybe_future(self.pinned_superclass.start_kernel(self, **kwargs))
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\utils.py", line 26, in wrapped
raise e
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\utils.py", line 23, in wrapped
return loop.run_until_complete(future)
File "C:\Users\lucas\anaconda3\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
return f.result()
File "C:\Users\lucas\anaconda3\lib\asyncio\futures.py", line 201, in result
raise self._exception
File "C:\Users\lucas\anaconda3\lib\asyncio\tasks.py", line 256, in __step
result = coro.send(None)
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\multikernelmanager.py", line 207, in _async_start_kernel
starter = ensure_async(km.start_kernel(**kwargs))
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\utils.py", line 26, in wrapped
raise e
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\utils.py", line 23, in wrapped
return loop.run_until_complete(future)
File "C:\Users\lucas\anaconda3\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
return f.result()
File "C:\Users\lucas\anaconda3\lib\asyncio\futures.py", line 201, in result
raise self._exception
File "C:\Users\lucas\anaconda3\lib\asyncio\tasks.py", line 256, in __step
result = coro.send(None)
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\manager.py", line 79, in wrapper
raise e
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\manager.py", line 71, in wrapper
out = await method(self, *args, **kwargs)
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\manager.py", line 381, in _async_start_kernel
await ensure_async(self._launch_kernel(kernel_cmd, **kw))
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\utils.py", line 26, in wrapped
raise e
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\utils.py", line 23, in wrapped
return loop.run_until_complete(future)
File "C:\Users\lucas\anaconda3\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
return f.result()
File "C:\Users\lucas\anaconda3\lib\asyncio\futures.py", line 201, in result
raise self._exception
File "C:\Users\lucas\anaconda3\lib\asyncio\tasks.py", line 256, in __step
result = coro.send(None)
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\manager.py", line 301, in _async_launch_kernel
connection_info = await self.provisioner.launch_kernel(kernel_cmd, **kw)
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\provisioning\local_provisioner.py", line 204, in launch_kernel
self.process = launch_kernel(cmd, **scrubbed_kwargs)
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\launcher.py", line 169, in launch_kernel
raise ex
File "C:\Users\lucas\anaconda3\lib\site-packages\jupyter_client\launcher.py", line 157, in launch_kernel
proc = Popen(cmd, **kwargs)
File "C:\Users\lucas\anaconda3\lib\subprocess.py", line 951, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "C:\Users\lucas\anaconda3\lib\subprocess.py", line 1420, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file specified
I had the same problem. This post helped me to solve it. For some reason, the matlab kernel config file points to the wrong python location.
Solution
Edit the file %APPDATA%\jupyter\kernels\matlab\kernel.json so that the first argument points to the correct python executable. In my case from:
{"argv": ["/tmp/conda_envs/258853ccd52b78b326300497/bin/python", "-m", "matlab_kernel", ...
to
{"argv": ["C:\\Users\\YOURUSERNAME\\.conda\\envs\\ENVNAME\\python.exe", "-m", "matlab_kernel", ...
Or whatever is the correct python path to your environment (change YOURUSERNAME and ENVNAME). In windows you can find it using where python
Extra info
For debugging and finding the kernel.json file, I used
jupyter console --kernel matlab --debug
I'm having trouble running python code on juypter notebook. The following error message appears when I click on Kernel. Does anyone have a clue of what's wrong?
Thanks in advance!
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/tornado/web.py", line 1704, in _execute
result = await result
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/tornado/gen.py", line 769, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/notebook/services/sessions/handlers.py", line 69, in post
model = yield maybe_future(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/tornado/gen.py", line 762, in run
value = future.result()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/tornado/gen.py", line 769, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/notebook/services/sessions/sessionmanager.py", line 98, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/tornado/gen.py", line 762, in run
value = future.result()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/tornado/gen.py", line 769, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/notebook/services/sessions/sessionmanager.py", line 110, in start_kernel_for_session
kernel_id = yield maybe_future(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/tornado/gen.py", line 762, in run
value = future.result()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/notebook/services/kernels/kernelmanager.py", line 176, in start_kernel
kernel_id = await maybe_future(self.pinned_superclass.start_kernel(self, **kwargs))
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/jupyter_client/multikernelmanager.py", line 186, in start_kernel
km.start_kernel(**kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/jupyter_client/manager.py", line 341, in start_kernel
self.kernel = self._launch_kernel(kernel_cmd, **kw)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/jupyter_client/manager.py", line 249, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/jupyter_client/launcher.py", line 132, in launch_kernel
proc = Popen(cmd, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 947, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 1819, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/Library/Frameworks/Python.framework/Versions/3.6/bin/python3'
Using this answer from another thread, I solved my issue.
I simply had to update jupyter notebook kernel using
pip3 install ipykernel --upgrade
python3 -m ipykernel install --user
This is what my notebook looks like and it's been causing me troubles:
How Jupyter Notebook starts for me on iTerm2
The Jupyter Notebook Screenshot
I'm a newbie to Data Science and recently switched over my MacBook using the Migration Assistant. However, after a couple of days when I tried running Jupyter Notebook from my iTerm2, it didn't seem to work so I decided to uninstall my Anaconda Navigator and re-do everything. However, I've installed and uninstalled this a couple of times and haven't reached a solution. I also looked at removing all anaconda related files from my MacBook using Funter. However, still no success.
As of right now, my Anaconda Navigator opens up and so does the anaconda show up within iTerm2. However, the issue has become that there seems to be no kernel running or found when I open up my Jupyter Notebook from either of the two.
Here's the error I get:
Traceback (most recent call last):
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/tornado/web.py", line 1703, in _execute
result = await result
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/handlers.py", line 69, in post
model = yield maybe_future(
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/sessionmanager.py", line 88, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/sessionmanager.py", line 100, in start_kernel_for_session
kernel_id = yield maybe_future(
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/notebook/services/kernels/kernelmanager.py", line 176, in start_kernel
kernel_id = await maybe_future(self.pinned_superclass.start_kernel(self, **kwargs))
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/multikernelmanager.py", line 185, in start_kernel
km.start_kernel(**kwargs)
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 313, in start_kernel
self.kernel = self._launch_kernel(kernel_cmd, **kw)
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 220, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File "/Users/AlyB/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/launcher.py", line 131, in launch_kernel
proc = Popen(cmd, **kwargs)
File "/Users/AlyB/opt/anaconda3/lib/python3.8/subprocess.py", line 854, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "/Users/AlyB/opt/anaconda3/lib/python3.8/subprocess.py", line 1702, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/Users/AlyB/opt/anaconda3/envs/tf2/bin/python'
What can I try to resolve this?
When trying to launch a jupyter notebook using python version 3.7.4 I run into the following error:
Failed to start the kernel message is...
Traceback (most recent call last):
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\web.py", line 1699, in _execute
result = await result
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\notebook\services\sessions\handlers.py", line 72, in post
type=mtype))
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 88, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 101, in start_kernel_for_session
self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 209, in wrapper
yielded = next(result)
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 168, in start_kernel
super(MappingKernelManager, self).start_kernel(**kwargs)
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\jupyter_client\multikernelmanager.py", line 110, in start_kernel
km.start_kernel(**kwargs)
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\jupyter_client\manager.py", line 240, in start_kernel
self.write_connection_file()
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\jupyter_client\connect.py", line 547, in write_connection_file
kernel_name=self.kernel_name
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\jupyter_client\connect.py", line 212, in write_connection_file
with secure_write(fname) as f:
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\contextlib.py", line 112, in __enter__
return next(self.gen)
File "C:\Users\felixkim1023\AppData\Local\Continuum\anaconda3\lib\site-packages\jupyter_client\connect.py", line 102, in secure_write
with os.fdopen(os.open(fname, open_flag, 0o600), mode) as f:
PermissionError: [Errno 13] Permission denied: 'C:\\Users\\felixkim1023\\AppData\\Roaming\\jupyter\\runtime\\kernel-0a76fc02-0376-4747-a88f-0effa941a976.json'
How do I solve this problem?
PermissionError: [Errno 13] Permission denied: 'C:\\Users\\felixkim1023\\AppData\\Roaming\\jupyter\\runtime\\kernel-0a76fc02-0376-4747-a88f-0effa941a976.json'
This sentence is pretty clear, you don't have permission. If you are in a bash shell be sure to run your command with sudo, i.e:
sudo jupyter notebook
If you're not (e.g. you're in a Windows Powershell) be sure to launch the shell as administrator (right-click launch as administrator).
The kernel error appearing on my anaconda juppyter notebook.
I have tried to change " shell:False" to "shell:True", but it didn't work.
Traceback (most recent call last):
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\tornado\web.py", line 1699, in _execute
result = await result
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\notebook\services\sessions\handlers.py", line 72, in post
type=mtype))
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 88, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 101, in start_kernel_for_session
self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\tornado\gen.py", line 209, in wrapper
yielded = next(result)
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 168, in start_kernel
super(MappingKernelManager, self).start_kernel(**kwargs)
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\jupyter_client\multikernelmanager.py", line 110, in start_kernel
km.start_kernel(**kwargs)
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\jupyter_client\manager.py", line 259, in start_kernel
**kw)
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\jupyter_client\manager.py", line 204, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File "C:\Users\Lenovo\Anaconda3\lib\site-packages\jupyter_client\launcher.py", line 138, in launch_kernel
proc = Popen(cmd, **kwargs)
File "C:\Users\Lenovo\Anaconda3\lib\subprocess.py", line 775, in init
restore_signals, start_new_session)
File "C:\Users\Lenovo\Anaconda3\lib\subprocess.py", line 1178, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the specific file.
actually the environment that you made then you must have deleted them , there were refrences for those envs ,
soultion : used this in cmd :
python -m ipykernel install --user
see this for more help:
here