Kernel error in jupyter notebook #4909

Khushu06 · 2019-09-23T11:14:27Z

    km.start_kernel(**kwargs)
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\manager.py", line 240, in start_kernel
    self.write_connection_file()
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 547, in write_connection_file
    kernel_name=self.kernel_name
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 212, in write_connection_file
    with secure_write(fname) as f:
  File "C:\Users\Khushboo.Girotra\anaconda3\lib\contextlib.py", line 112, in __enter__
    return next(self.gen)
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 100, in secure_write
    win32_restrict_file_to_user(fname)
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 53, in win32_restrict_file_to_user
    import win32api
ImportError: DLL load failed: The specified procedure could not be found.``` 

I have re-install the anaconda as well . but still It is showing the same kernel error.
 Kernel json file shows :
{
 "argv": [
  "C:\\Users\\Khushboo.Girotra\\python.exe",
  "-m",
  "ipykernel_launcher",
  "-f",
  "{connection_file}"
 ],
 "display_name": "Python 3",
 "language": "python"
} 

I have tried lot of solution which are already there but nothing works out . Kindly help

The text was updated successfully, but these errors were encountered:

Khushu06 · 2019-09-23T14:58:50Z

Kindly respond

kevin-bates · 2019-09-23T15:47:06Z

You might want to be sure the latest version (5.3.3) of jupyter_client is fully installed. Looks like this portion of its setup.py didn't run pywin32 >=1.0 ; sys_platform == 'win32'.

Khushu06 · 2019-09-23T16:07:27Z

It's 5.3.3 version only but there is no file = setup.py under jupyter _client. Kindle elaborate

Khushu06 · 2019-09-23T16:21:58Z

jupyter core : 4.5.0
jupyter-notebook : 6.0.1
qtconsole : 4.5.5
ipython : 7.8.0
ipykernel : 5.1.2
jupyter client : 5.3.3
jupyter lab : 1.1.3
nbconvert : 5.6.0
ipywidgets : 7.5.1
nbformat : 4.4.0
traitlets : 4.3.2

kevin-bates · 2019-09-23T16:24:50Z

I'm referring to the setup.py that's in the repository: https://github.com/jupyter/jupyter_client/blob/5.3.3/setup.py
This file isn't laid down during installation but it's what is used during jupyter_client's installation.

You might try pip install --upgrade jupyter_client. You should have pywin32 installed.

Khushu06 · 2019-09-23T16:33:18Z

I have installed anaconda , under that jupyter notebook also get installed .
I have 5.3.3 version and pywin32 is installed . Still there is kernel error.

kevin-bates · 2019-09-23T16:37:02Z

I have 5.3.3 version and pywin32 is installed . Still there is kernel error.

Is the kernel failure still due to a DLL load failure - or something different now?
ImportError: DLL load failed: The specified procedure could not be found.

Khushu06 · 2019-09-23T16:39:25Z

It's a same error of DLL load failed

Khushu06 · 2019-09-23T16:43:38Z

       file:///C:/Users/Khushboo.Girotra/AppData/Roaming/jupyter/runtime/nbserver-13148-open.html
   Or copy and paste one of these URLs:
       http://localhost:8888/?token=ecaf07a435edebf1a26c758893d1dac7c4996693520529ff
    or http://127.0.0.1:8888/?token=ecaf07a435edebf1a26c758893d1dac7c4996693520529ff
[W 22:08:54.472 NotebookApp] Notebook Documents/Analytics bootcamp/python_decision_trees/decision_trees/decision_trees.ipynb is not trusted
[E 22:08:58.108 NotebookApp] Uncaught exception POST /api/sessions (::1)
   HTTPServerRequest(protocol='http', host='localhost:8888', method='POST', uri='/api/sessions', version='HTTP/1.1', remote_ip='::1')
   Traceback (most recent call last):
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\tornado\web.py", line 1699, in _execute
       result = await result
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
       yielded = self.gen.throw(*exc_info)  # type: ignore
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\notebook\services\sessions\handlers.py", line 72, in post
       type=mtype))
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
       value = future.result()
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
       yielded = self.gen.throw(*exc_info)  # type: ignore
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\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\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
       value = future.result()
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
       yielded = self.gen.throw(*exc_info)  # type: ignore
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\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\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
       value = future.result()
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 209, in wrapper
       yielded = next(result)
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\notebook\services\kernels\kernelmanager.py", line 168, in start_kernel
       super(MappingKernelManager, self).start_kernel(**kwargs)
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\multikernelmanager.py", line 110, in start_kernel
       km.start_kernel(**kwargs)
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\manager.py", line 240, in start_kernel
       self.write_connection_file()
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 547, in write_connection_file
       kernel_name=self.kernel_name
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 212, in write_connection_file
       with secure_write(fname) as f:
     File "C:\Users\Khushboo.Girotra\anaconda3\lib\contextlib.py", line 112, in __enter__
       return next(self.gen)
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 100, in secure_write
       win32_restrict_file_to_user(fname)
     File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 53, in win32_restrict_file_to_user
       import win32api
   ImportError: DLL load failed: The specified procedure could not be found.
[W 22:08:58.140 NotebookApp] Unhandled error
[E 22:08:58.140 NotebookApp] {
     "Content-Type": "application/json",
     "Accept": "application/json, text/javascript, */*; q=0.01",
     "X-Xsrftoken": "2|272e5111|35d3dd9abc94bc322626eb0226eb4688|1568606969",
     "X-Requested-With": "XMLHttpRequest",
     "Referer": "http://localhost:8888/notebooks/Documents/Analytics%20bootcamp/python_decision_trees/decision_trees/decision_trees.ipynb",
     "Accept-Language": "en-IN",
     "Accept-Encoding": "gzip, deflate",
     "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko",
     "Host": "localhost:8888",
     "Content-Length": "163",
     "Connection": "Keep-Alive",
     "Cache-Control": "no-cache",
     "Cookie": "_xsrf=2|272e5111|35d3dd9abc94bc322626eb0226eb4688|1568606969; username-localhost-8890=\"2|1:0|10:1569241500|23:username-localhost-8890|44:NjhmYTcwN2UyOWU3NGZkN2EzNDg2NWNkYWRiYjAwM2M=|2dd0b3cbedd7aec9ddb5a5487f6431906a442b75380dd0587e1d1b3e9f5f7475\"; username-localhost-8889=\"2|1:0|10:1569253558|23:username-localhost-8889|44:Mjg4OTcwZjIyMzJiNDkzMDkwZmVhZGY1Mzk2MGIwMGQ=|16708bbdcf21858ebb05eb126eea8fd1d1d23a770dd78f4c00427469bfa17d3c\"; username-localhost-8888=\"2|1:0|10:1569256712|23:username-localhost-8888|44:YjZkM2JjZDAwZmEyNDllMWI0NThhNzg0OTQ1YTRjM2M=|4d33dac2a071434c20d5ed0e0320c827950ec822c40925d68aa42b936e1e39e7\""
   }
[E 22:08:58.155 NotebookApp] 500 POST /api/sessions (::1) 312.31ms referer=http://localhost:8888/notebooks/Documents/Analytics%20bootcamp/python_decision_trees/decision_trees/decision_trees.ipynb```

kevin-bates · 2019-09-23T16:51:04Z

Thanks for the update. You'll need to figure out why import win32api is not working. There are a number of SO hits on this issue, some of which state that pip install pypiwin32 resolved the issue. I don't have access to a windows machine, so can't really help much more than this - sorry.

Khushu06 · 2019-09-23T16:52:23Z

Thanks for giving me the directions !

Khushu06 · 2019-09-24T05:06:56Z

Now it shows me the error of dead kernel. Kindly help on this

[I 10:33:32.182 NotebookApp] Loading IPython parallel extension
[I 10:33:32.292 NotebookApp] JupyterLab extension loaded from C:\Users\Khushboo.Girotra\anaconda3\lib\site-packages\jupyterlab
[I 10:33:32.292 NotebookApp] JupyterLab application directory is C:\Users\Khushboo.Girotra\anaconda3\share\jupyter\lab
[I 10:33:32.297 NotebookApp] Serving notebooks from local directory: C:\Users\Khushboo.Girotra
[I 10:33:32.298 NotebookApp] The Jupyter Notebook is running at:
[I 10:33:32.299 NotebookApp] http://localhost:8888/?token=8e24cc355a607b399fedca623643ddf1b2ebb428f69c39bc
[I 10:33:32.300 NotebookApp]  or http://127.0.0.1:8888/?token=8e24cc355a607b399fedca623643ddf1b2ebb428f69c39bc
[I 10:33:32.301 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 10:33:32.755 NotebookApp]

    To access the notebook, open this file in a browser:
        file:///C:/Users/Khushboo.Girotra/AppData/Roaming/jupyter/runtime/nbserver-8844-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/?token=8e24cc355a607b399fedca623643ddf1b2ebb428f69c39bc
     or http://127.0.0.1:8888/?token=8e24cc355a607b399fedca623643ddf1b2ebb428f69c39bc
[W 10:33:50.064 NotebookApp] Notebook Documents/Analytics bootcamp/python_decision_trees/decision_trees/decision_trees.ipynb is not trusted
[I 10:33:53.885 NotebookApp] Kernel started: a869e91b-d19d-478e-b2a7-6fda11ce89f5
Traceback (most recent call last):
  File "C:\Users\Khushboo.Girotra\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "C:\Users\Khushboo.Girotra\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\ipykernel_launcher.py", line 16, in <module>
    app.launch_new_instance()
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\traitlets\config\application.py", line 657, in launch_instance
    app.initialize(argv)
  File "<C:\Users\Khushboo.Girotra\lib\site-packages\decorator.py:decorator-gen-125>", line 2, in initialize
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\traitlets\config\application.py", line 87, in catch_config_error
    return method(app, *args, **kwargs)
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\ipykernel\kernelapp.py", line 530, in initialize
    self.write_connection_file()
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\ipykernel\kernelapp.py", line 227, in write_connection_file
    iopub_port=self.iopub_port, control_port=self.control_port)
  File "C:\Users\Khushboo.Girotra\lib\site-packages\jupyter_client\connect.py", line 212, in write_connection_file
    with secure_write(fname) as f:
  File "C:\Users\Khushboo.Girotra\lib\contextlib.py", line 112, in __enter__
    return next(self.gen)
  File "C:\Users\Khushboo.Girotra\lib\site-packages\jupyter_client\connect.py", line 100, in secure_write
    win32_restrict_file_to_user(fname)
  File "C:\Users\Khushboo.Girotra\lib\site-packages\jupyter_client\connect.py", line 53, in win32_restrict_file_to_user
    import win32api
ImportError: DLL load failed: The specified procedure could not be found.
[I 10:33:59.591 NotebookApp] KernelRestarter: restarting kernel (1/5), keep random ports
[IPKernelApp] ERROR | Failed to load connection file: 'C:\\Users\\Khushboo.Girotra\\AppData\\Roaming\\jupyter\\runtime\\kernel-a869e91b-d19d-478e-b2a7-6fda11ce89f5.json'
Traceback (most recent call last):
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\ipykernel\kernelapp.py", line 252, in init_connection_file
    self.load_connection_file()
  File "C:\Users\Khushboo.Girotra\lib\site-packages\jupyter_client\connect.py", line 569, in load_connection_file
    info = json.load(f)
  File "C:\Users\Khushboo.Girotra\lib\json\__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "C:\Users\Khushboo.Girotra\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\Khushboo.Girotra\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\Khushboo.Girotra\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
[I 10:34:02.637 NotebookApp] KernelRestarter: restarting kernel (2/5), keep random ports
[IPKernelApp] ERROR | Failed to load connection file: 'C:\\Users\\Khushboo.Girotra\\AppData\\Roaming\\jupyter\\runtime\\kernel-a869e91b-d19d-478e-b2a7-6fda11ce89f5.json'
Traceback (most recent call last):
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\ipykernel\kernelapp.py", line 252, in init_connection_file
    self.load_connection_file()
  File "C:\Users\Khushboo.Girotra\lib\site-packages\jupyter_client\connect.py", line 569, in load_connection_file
    info = json.load(f)
  File "C:\Users\Khushboo.Girotra\lib\json\__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "C:\Users\Khushboo.Girotra\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\Khushboo.Girotra\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\Khushboo.Girotra\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
[I 10:34:05.668 NotebookApp] KernelRestarter: restarting kernel (3/5), keep random ports
[IPKernelApp] ERROR | Failed to load connection file: 'C:\\Users\\Khushboo.Girotra\\AppData\\Roaming\\jupyter\\runtime\\kernel-a869e91b-d19d-478e-b2a7-6fda11ce89f5.json'
Traceback (most recent call last):
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\ipykernel\kernelapp.py", line 252, in init_connection_file
    self.load_connection_file()
  File "C:\Users\Khushboo.Girotra\lib\site-packages\jupyter_client\connect.py", line 569, in load_connection_file
    info = json.load(f)
  File "C:\Users\Khushboo.Girotra\lib\json\__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "C:\Users\Khushboo.Girotra\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\Khushboo.Girotra\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\Khushboo.Girotra\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
[I 10:34:08.695 NotebookApp] KernelRestarter: restarting kernel (4/5), keep random ports
[IPKernelApp] ERROR | Failed to load connection file: 'C:\\Users\\Khushboo.Girotra\\AppData\\Roaming\\jupyter\\runtime\\kernel-a869e91b-d19d-478e-b2a7-6fda11ce89f5.json'
Traceback (most recent call last):
  File "C:\Users\Khushboo.Girotra\AppData\Roaming\Python\Python37\site-packages\ipykernel\kernelapp.py", line 252, in init_connection_file
    self.load_connection_file()
  File "C:\Users\Khushboo.Girotra\lib\site-packages\jupyter_client\connect.py", line 569, in load_connection_file
    info = json.load(f)
  File "C:\Users\Khushboo.Girotra\lib\json\__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "C:\Users\Khushboo.Girotra\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\Khushboo.Girotra\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\Khushboo.Girotra\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
[W 10:34:11.713 NotebookApp] KernelRestarter: restart failed
[W 10:34:11.714 NotebookApp] Kernel a869e91b-d19d-478e-b2a7-6fda11ce89f5 died, removing from map.
[W 10:34:54.178 NotebookApp] Timeout waiting for kernel_info reply from a869e91b-d19d-478e-b2a7-6fda11ce89f5
[E 10:34:54.181 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: a869e91b-d19d-478e-b2a7-6fda11ce89f5)
[W 10:34:55.240 NotebookApp] 404 GET /api/kernels/a869e91b-d19d-478e-b2a7-6fda11ce89f5/channels?session_id=fe921aa3776f48e79b7232347f66318f (::1): Kernel does not exist: a869e91b-d19d-478e-b2a7-6fda11ce89f5
[W 10:34:55.286 NotebookApp] 404 GET /api/kernels/a869e91b-d19d-478e-b2a7-6fda11ce89f5/channels?session_id=fe921aa3776f48e79b7232347f66318f (::1) 46.89ms referer=None
[W 10:34:57.395 NotebookApp] Replacing stale connection: a869e91b-d19d-478e-b2a7-6fda11ce89f5:fe921aa3776f48e79b7232347f66318f```

kevin-bates · 2019-09-24T14:02:16Z

This is still the same issue, failed import of win32api. Did you try pip install pywin32 into the correct environment? Looks like you're hitting this issue: conda-forge/jupyter_client-feedstock#29 (so at least you're not alone 😄)

Khushu06 · 2019-09-24T14:15:01Z

I have installed pywin32 , what does correct environment mean here?

Khushu06 · 2019-09-24T14:19:03Z

How should I resolve it ? I tried a lot reading lot of stuffs on github and solving it, but nothing works out. Please help

kevin-bates · 2019-09-24T14:30:26Z

If you're dealing with virtual envs or conda environments, where you installed pywin32 matters. I would create a one line python script that imports win32api and get that python script to not throw ModuleNotFoundError.

import win32api

save into import_win32api.py. If you invoke python import_win32api.py in the same env as you run Notebook, you should get something like ModuleNotFoundError: No module named 'win32api'. You'll know things are better when that same invocation yields nothing (indicating the import statement worked).

Also focus on where your python command is coming from (and relative to your jupyter command). The multiple envs can be confusing.

((I had also referenced pypiwin32 before since that's what SO posts used, but try pywin32 as well.))

Khushu06 · 2019-09-24T14:40:52Z

I got this error when I run this :

(base) C:\Users\Khushboo.Girotra>python import_win32api.py
Traceback (most recent call last):
File "import_win32api.py", line 1, in
import win32api
ImportError: DLL load failed: The specified procedure could not be found.

kevin-bates · 2019-09-24T14:56:08Z

That's good actually. So now try to get pywin32 installed in such a way that the import statement succeeds.

Khushu06 · 2019-09-24T15:06:42Z

but how ? what's the other way

jasongrout · 2019-09-24T15:28:26Z

Try conda install pywin32 if you are using conda.

Khushu06 · 2019-09-24T16:06:28Z

I did that , still showing the same error.

Khushu06 · 2019-09-24T16:09:44Z

2 days back everything was working fine. Suddenly dead kernel issue pops up

Khushu06 · 2019-09-24T16:11:27Z

ModuleNotFoundError: No module named 'win32api' . This is the error which I am getting now

kevin-bates · 2019-09-25T00:23:36Z

@minrk updated the dependencies in conda-forge earlier today. These instructions might help get you going: https://github.com/conda-forge/jupyter_client-feedstock#installing-jupyter_client

lemuelaspe · 2019-09-30T09:02:25Z

Same problem [kernel error]
I've got this error

Traceback (most recent call last):
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\tornado\web.py", line 1699, in _execute
result = await result
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\notebook\services\sessions\handlers.py", line 72, in post
type=mtype))
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\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\Lemuel\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
yielded = self.gen.throw(*exc_info) # type: ignore
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\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\Lemuel\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
value = future.result()
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 209, in wrapper
yielded = next(result)
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\notebook\services\kernels\kernelmanager.py", line 168, in start_kernel
super(MappingKernelManager, self).start_kernel(**kwargs)
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\jupyter_client\multikernelmanager.py", line 110, in start_kernel
km.start_kernel(**kwargs)
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\jupyter_client\manager.py", line 240, in start_kernel
self.write_connection_file()
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 547, in write_connection_file
kernel_name=self.kernel_name
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 212, in write_connection_file
with secure_write(fname) as f:
File "C:\Users\Lemuel\Anaconda3\lib\contextlib.py", line 112, in enter
return next(self.gen)
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 100, in secure_write
win32_restrict_file_to_user(fname)
File "C:\Users\Lemuel\AppData\Roaming\Python\Python37\site-packages\jupyter_client\connect.py", line 53, in win32_restrict_file_to_user
import win32api
ImportError: DLL load failed: %1 is not a valid Win32 application.

please help me. thanks

lemuelaspe · 2019-09-30T09:16:04Z

I try installing pip install pypiwin32 but when i run import win32api i got this error
Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: DLL load failed: %1 is not a valid Win32 application.

kevin-bates · 2019-09-30T13:39:27Z

Please try relative to pywin32. Since this is a conda env - you might be better off with conda install pywin32.

lemuelaspe · 2019-09-30T15:30:29Z

It wont worked. I will try to re-install anaconda3 then create env for tensorflow-gpu then retry the process on launching jupyter notebook, I will update you if i got same error. Thank you for your response sir.

I've been following this step on installing tensorflow-gpu for object_detection but i stack while running this command (tensorflow1) C:\tensorflow1\models\research\object_detection> jupyter notebook object_detection_tutorial.ipynb. This is the github repository that i followed on installing tensorflow-gpu.

lemuelaspe · 2019-09-30T15:30:53Z

https://github.com/EdjeElectronics/TensorFlow-Object-Detection-API-Tutorial-Train-Multiple-Objects-Windows-10#appendix-common-errors

kevin-bates · 2020-02-26T00:36:30Z

@nani-samireddy - your traceback output strikes me as more to do with ipykernel and ipython than jupyter_client and jupyter_core issues - which was the original problem reported on this issue.

I would make sure you're running the latest versions of ipykernel and ipython.

Also, does your notebook start but you only see this issue upon execution of a cell? There's some aspect to this that I wonder if the issue is related to what's in the cell. I'm assuming that's not the case, but I need to ask if you're able to run some simple cells prior to the issue?

nani-samireddy · 2020-02-26T16:59:20Z

@kevin-bates I am running latest versions of ipykernel and ipython.
and my notebook is starting but I am not able to execute a single line of code

kevin-bates · 2020-02-26T17:25:18Z

Googling led me to this Spyder issue - which implies it's probably not in Notebook itself. More googling led me to this IPython issue - which I believe is your scenario.

Please check the contents of your PATHEXT environment variable and ensure it only contains extension names (suffixes). This article might help how to go about that. Like the IPython issue, I suspect your PATHEXT has path names in it and that's where the invalid escape sequence of '\U' is coming from.

Himani3344 · 2020-03-06T02:20:08Z

Collecting pycocotools
Using cached pycocotools-2.0.0.tar.gz (1.5 MB)
Building wheels for collected packages: pycocotools
Building wheel for pycocotools (setup.py): started
Building wheel for pycocotools (setup.py): finished with status 'error'
Running setup.py clean for pycocotools
Failed to build pycocotools
Installing collected packages: pycocotools
Running setup.py install for pycocotools: started
Running setup.py install for pycocotools: finished with status 'error'
ERROR: Command errored out with exit status 1:
command: 'c:\programdata\anaconda3\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\admin\AppData\Local\Temp\pip-install-gbwkk1le\pycocotools\setup.py'"'"'; file='"'"'C:\Users\admin\AppData\Local\Temp\pip-install-gbwkk1le\pycocotools\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\admin\AppData\Local\Temp\pip-wheel-f2t8qhve'
cwd: C:\Users\admin\AppData\Local\Temp\pip-install-gbwkk1le\pycocotools
Complete output (13 lines):
running bdist_wheel
running build
running build_py
creating build
creating build\lib.win-amd64-3.7
creating build\lib.win-amd64-3.7\pycocotools
copying pycocotools\coco.py -> build\lib.win-amd64-3.7\pycocotools
copying pycocotools\cocoeval.py -> build\lib.win-amd64-3.7\pycocotools
copying pycocotools\mask.py -> build\lib.win-amd64-3.7\pycocotools
copying pycocotools_init_.py -> build\lib.win-amd64-3.7\pycocotools
running build_ext
building 'pycocotools._mask' extension
error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://visualstudio.microsoft.com/downloads/

Himani3344 · 2020-03-06T03:04:12Z

need help to solve above error

nadia238 · 2020-03-09T14:11:36Z

[W 15:31:02.063 NotebookApp] Terminals not available (error was DLL load failed: %1 is not a valid Win32 application.)
[I 15:31:02.101 NotebookApp] JupyterLab extension loaded from C:\Users\nadia\Anaconda3\lib\site-packages\jupyterlab
[I 15:31:02.101 NotebookApp] JupyterLab application directory is C:\Users\nadia\Anaconda3\share\jupyter\lab
[I 15:31:02.103 NotebookApp] Serving notebooks from local directory: C:\Users\nadia
[I 15:31:02.103 NotebookApp] The Jupyter Notebook is running at:
[I 15:31:02.103 NotebookApp] http://localhost:8888/?token=5024d8db2d803fc4c0c3194677ddcb520230109fd1e9efa2
[I 15:31:02.103 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 15:31:02.185 NotebookApp]

To access the notebook, open this file in a browser:
file:///C:/Users/nadia/AppData/Roaming/jupyter/runtime/nbserver-28920-open.html
Or copy and paste one of these URLs:
http://localhost:8888/?token=5024d8db2d803fc4c0c3194677ddcb520230109fd1e9efa2

I get this too

sanjanakancharla · 2020-03-10T03:00:31Z

My system is Windows 64 bit. This solved for me.

conda install -c conda-forge pywin32
conda install -c anaconda jupyter_client
conda install -c conda-forge jupyter_core

Thank you so much!! this worked me!

Himani3344 · 2020-03-11T12:54:09Z

Not able to get frozen inference graph module in notebook what will the error so that can get that module for object detection using tensorflow ??

Himani3344 · 2020-03-15T14:19:41Z

(tensorflow_gpu) c:\tensorflow\models\research\object_detection\builders>python model_builder_test.py
Traceback (most recent call last):
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 58, in
from tensorflow.python.pywrap_tensorflow_internal import *
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 28, in
_pywrap_tensorflow_internal = swig_import_helper()
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\imp.py", line 243, in load_module
return load_dynamic(name, filename, file)
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\imp.py", line 343, in load_dynamic
return _load(spec)
ImportError: DLL load failed: The specified module could not be found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "model_builder_test.py", line 20, in
import tensorflow as tf
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow_init_.py", line 41, in
from tensorflow.python.tools import module_util as module_util
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow\python_init.py", line 50, in
from tensorflow.python import pywrap_tensorflow
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 69, in
raise ImportError(msg)
ImportError: Traceback (most recent call last):
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 58, in
from tensorflow.python.pywrap_tensorflow_internal import *
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 28, in
_pywrap_tensorflow_internal = swig_import_helper()
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\imp.py", line 243, in load_module
return load_dynamic(name, filename, file)
File "C:\Users\admin\anaconda3\envs\tensorflow_gpu\lib\imp.py", line 343, in load_dynamic
return _load(spec)
ImportError: DLL load failed: The specified module could not be found.

Failed to load the native TensorFlow runtime.

See https://www.tensorflow.org/install/errors

for some common reasons and solutions. Include the entire stack trace
above this error message when asking for help.

(tensorflow_gpu) c:\tensorflow\models\research\object_detection\builders>

help me with issue ASAP please.....

kevin-bates · 2020-03-17T15:40:13Z

As best as I can tell, this module (ntsecuritycon) comes from the pywin32 package, so I would focus on ensuring its proper installation. You might try conda update -c conda-forge pywin32.

Gopalkataria · 2020-03-28T10:07:19Z

I'm referring to the setup.py that's in the repository: https://github.com/jupyter/jupyter_client/blob/5.3.3/setup.py
This file isn't laid down during installation but it's what is used during jupyter_client's installation.

You might try pip install --upgrade jupyter_client. You should have pywin32 installed.

I had the same issue and It actually worked for me
seems like there it was craving for an update

Thank you

Yash5044 · 2020-04-13T14:09:06Z

My system is Windows 64 bit. This solved for me.

conda install -c conda-forge pywin32
conda install -c anaconda jupyter_client
conda install -c conda-forge jupyter_core

Worked like a charm dude!

anugrahdputra · 2020-04-16T16:51:11Z

Try conda install pywin32 if you are using conda.

thanks for this solution.

vinilcariappa · 2020-04-18T15:14:17Z

Collecting pycocotools
Using cached pycocotools-2.0.0.tar.gz (1.5 MB)
Building wheels for collected packages: pycocotools
Building wheel for pycocotools (setup.py): started
Building wheel for pycocotools (setup.py): finished with status 'error'
Running setup.py clean for pycocotools
Failed to build pycocotools
Installing collected packages: pycocotools
Running setup.py install for pycocotools: started
Running setup.py install for pycocotools: finished with status 'error'
ERROR: Command errored out with exit status 1:
command: 'c:\programdata\anaconda3\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\admin\AppData\Local\Temp\pip-install-gbwkk1le\pycocotools\setup.py'"'"'; file='"'"'C:\Users\admin\AppData\Local\Temp\pip-install-gbwkk1le\pycocotools\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\admin\AppData\Local\Temp\pip-wheel-f2t8qhve'
cwd: C:\Users\admin\AppData\Local\Temp\pip-install-gbwkk1le\pycocotools
Complete output (13 lines):
running bdist_wheel
running build
running build_py
creating build
creating build\lib.win-amd64-3.7
creating build\lib.win-amd64-3.7\pycocotools
copying pycocotools\coco.py -> build\lib.win-amd64-3.7\pycocotools
copying pycocotools\cocoeval.py -> build\lib.win-amd64-3.7\pycocotools
copying pycocotools\mask.py -> build\lib.win-amd64-3.7\pycocotools
copying pycocotools_init_.py -> build\lib.win-amd64-3.7\pycocotools
running build_ext
building 'pycocotools._mask' extension
error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://visualstudio.microsoft.com/downloads/

DID U GET THE SOLUTION FOR THIS ERROR?? EVEN IM STUCK WITH THIS ERROR

kevin-bates · 2020-04-18T16:02:17Z

@Himani3344 - did you resolve the pycocotools issue?

This output seems unrelated to the discussion - which is focused on an issue relative to pywin32. There are infinite ways a "Kernel error in jupyter notebook" can rear its head - so you might be better off creating a new issue specific to a failure with pycocotools.

alvinseptiano · 2020-04-19T06:17:11Z

after pip install --upgrade jupyter_client works fine for me

wridhdhi · 2020-04-21T14:24:04Z

Solved for me

conda install pywin32
installs :

certifi-2020.4.5.1 | py38_0 156 KB
pywin32-227 | py38he774522_1 5.6 MB

conda install jupyter_client
installs :

package | build
---------------------------|-----------------
decorator-4.4.2 | py_0 14 KB
entrypoints-0.3 | py38_0 11 KB
ipython_genutils-0.2.0 | py38_0 40 KB
jupyter_client-6.1.2 | py_0 82 KB
jupyter_core-4.6.3 | py38_0 98 KB
libsodium-1.0.16 | h9d3ae62_0 416 KB
pyzmq-18.1.1 | py38ha925a31_0 407 KB
traitlets-4.3.3 | py38_0 138 KB
zeromq-4.3.1 | h33f27b4_3 10.6 MB
------------------------------------------------------------

Version: 1.44.2 (system setup)
Commit: ff915844119ce9485abfe8aa9076ec76b5300ddd
Date: 2020-04-16T16:36:23.138Z
Electron: 7.1.11
Chrome: 78.0.3904.130
Node.js: 12.8.1
V8: 7.8.279.23-electron.0
OS: Windows_NT x64 10.0.18363
Python extension version 2020.3.71659 (2 April 2020)

Fixes this issue raised by win32api

Jupyter.log

import win32api
ImportError: DLL load failed while importing win32api: The specified module could not be found.
[W 16:56:16.502 NotebookApp] Unhandled error

nishantsingh23pbt · 2020-06-16T02:32:31Z

pywin32==225

but I get this error
ERROR: Could not install packages due to an EnvironmentError: [WinError 5] Access is denied: 'C:\Users\Nishant\AppData\Local\Temp\pip-uninstall-0dcy_q_8\win32\win32api.pyd'
Consider using the --user option or check the permissions.

Rudhirbabu · 2020-06-22T14:45:22Z

Sir My laptop is ASUS X510U . I've installed Anaconda and i opened jupyter notebook but it is showing Connection failed

Sir i hope you could resolve the issue Asap.

Faizul314 · 2020-08-03T05:08:53Z

I am facing Kernel Error and code is not running. It is moving to next cell when I click run. Plz help.

Traceback (most recent call last):
File "C:\Users\USER\anaconda3\lib\site-packages\tornado\web.py", line 1703, in _execute
    result = await result
  File "C:\Users\USER\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\USER\anaconda3\lib\site-packages\notebook\services\sessions\handlers.py", line 69, in post
    model = yield maybe_future(
  File "C:\Users\USER\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "C:\Users\USER\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\USER\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\USER\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "C:\Users\USER\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\USER\anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 100, in start_kernel_for_session
    kernel_id = yield maybe_future(
  File "C:\Users\USER\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "C:\Users\USER\anaconda3\lib\site-packages\tornado\gen.py", line 209, in wrapper
    yielded = next(result)
  File "C:\Users\USER\anaconda3\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 168, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "C:\Users\USER\anaconda3\lib\site-packages\jupyter_client\multikernelmanager.py", line 186, in start_kernel
    km.start_kernel(**kwargs)
  File "C:\Users\USER\anaconda3\lib\site-packages\jupyter_client\manager.py", line 308, in start_kernel
    self.kernel = self._launch_kernel(kernel_cmd, **kw)
  File "C:\Users\USER\anaconda3\lib\site-packages\jupyter_client\manager.py", line 215, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "C:\Users\USER\anaconda3\lib\site-packages\jupyter_client\launcher.py", line 135, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "C:\Users\USER\anaconda3\lib\subprocess.py", line 854, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Users\USER\anaconda3\lib\subprocess.py", line 1307, in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file specified

kevin-bates · 2020-08-03T17:17:28Z

You might try taking a look at #2301 (comment) and the surrounding comments/instructions.

claudiopb · 2020-08-14T05:54:03Z

step 2 command :- "conda activate (location of your env folder)"
step 3 command: - "python -m ipykernel install --user"

works

samy-n · 2020-08-16T11:59:51Z

conda install pywin32 resolved the issue for me

anuragk15 · 2020-08-16T12:20:06Z

conda install pywin32

This worked for me like a charm

nani-samireddy · 2020-09-18T08:25:35Z

@kevin-bates
I'm running latest version.
And the notebook is starting but I'm not able to execute anything I tried like 2+3 also but nothing is going.
And kernel is not starting..

kevin-bates · 2020-09-18T14:20:27Z

hi @nani-samireddy - I'm assuming this latest issue is related to your this issue you amended at about the same time: #2990 (comment)

claudiopb · 2020-09-25T01:38:38Z

@kevin-bates

If codes are not visible then you can use your desktop or laptop for better visualization.
Here is commands that are used in the video..!!
step 2 command :- "conda activate (location of your env folder)"
step 3 command: - "python -m ipykernel install --user"

kevin-bates mentioned this issue Sep 25, 2019

launching jupyter i get kernel error #2301

Closed

kevin-bates mentioned this issue Aug 25, 2020

Error Starting Kernel Invalid response: 500 Internal Server Error Unhandled error #5693

Closed

github-actions bot added the status:resolved-locked label Mar 25, 2021

github-actions bot locked as resolved and limited conversation to collaborators Mar 25, 2021

Kernel error in jupyter notebook #4909

Kernel error in jupyter notebook #4909

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wridhdhi commented Apr 21, 2020

Solved for me

Fixes this issue raised by win32api

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