Notebook: "500 : Internal Server Error" response while opening any notebook

[hmunnin]

[E 17:15:32.052 NotebookApp] Uncaught exception GET /notebooks/ML/Mod.ipynb (::1)
    HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/notebooks/ML/Mod.ipynb', version='HTTP/1.1', remote_ip='::1')
    Traceback (most recent call last):
      File "/usr/local/lib/python3.4/dist-packages/tornado/web.py", line 1541, in _execute
        result = method(*self.path_args, **self.path_kwargs)
      File "/usr/local/lib/python3.4/dist-packages/tornado/web.py", line 2949, in wrapper
        return method(self, *args, **kwargs)
      File "/usr/local/lib/python3.4/dist-packages/notebook/notebook/handlers.py", line 59, in get
        get_custom_frontend_exporters=get_custom_frontend_exporters
      File "/usr/local/lib/python3.4/dist-packages/notebook/base/handlers.py", line 424, in render_template
        return template.render(**ns)
      File "/usr/local/lib/python3.4/dist-packages/jinja2/environment.py", line 1008, in render
        return self.environment.handle_exception(exc_info, True)
      File "/usr/local/lib/python3.4/dist-packages/jinja2/environment.py", line 780, in handle_exception
        reraise(exc_type, exc_value, tb)
      File "/usr/local/lib/python3.4/dist-packages/jinja2/_compat.py", line 37, in reraise
        raise value.with_traceback(tb)
      File "/usr/local/lib/python3.4/dist-packages/notebook/templates/notebook.html", line 1, in top-level template code
        {% extends "page.html" %}
      File "/usr/local/lib/python3.4/dist-packages/notebook/templates/page.html", line 154, in top-level template code
        {% block header %}
      File "/usr/local/lib/python3.4/dist-packages/notebook/templates/notebook.html", line 117, in block "header"
        {% for exporter in get_custom_frontend_exporters() %}
      File "/usr/local/lib/python3.4/dist-packages/notebook/notebook/handlers.py", line 19, in get_custom_frontend_exporters
        from nbconvert.exporters.base import get_export_names, get_exporter
    ImportError: No module named 'nbconvert.exporters.base'
[E 17:15:32.058 NotebookApp] {
      "Cookie": "jenkins-timestamper-offset=-7200000; portainer.pagination_images=100; _xsrf=2|e14b81f3|51d2a266d38d404e570607fb51489a3e|1525957823; username-localhost-8888=\"2|1:0|10:1526829321|23:username-localhost-8888|44:NTQ2ZDBjNjA2ZDU1NDEyMTkzZDk3YWMyMmU4OTExNzg=|8a7e992430c91807f0d902a01fbe79755623840da06cc2f650d8515f6edf8d91\"",
      "Upgrade-Insecure-Requests": "1",
      "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
      "Accept-Encoding": "gzip, deflate",
      "Host": "localhost:8888",
      "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0",
      "Referer": "http://localhost:8888/tree/ML",
      "Connection": "keep-alive",
      "Accept-Language": "en-US,en;q=0.5"
    }

[hmunnin]

Fixed via python3.4 modules wipe.
Probably error occurred because some libraries was not deleted completely

[jarascript]

Hey @dmitrykdev , what did you do exactly? I have the same error

[E 16:28:19.573 NotebookApp] Uncaught exception GET /notebooks/Untitled1.ipynb?kernel_name=python3 (172.17.0.1)

HTTPServerRequest(protocol='http', host='localhost:9000', method='GET', uri='/notebooks/Untitled1.ipynb?kernel_name=python3', version='HTTP/1.1', remote_ip='172.17.0.1')
Traceback (most recent call last):

  File "/opt/conda/lib/python3.5/site-packages/tornado/web.py", line 1541, in _execute
    result = method(*self.path_args, **self.path_kwargs)

  File "/opt/conda/lib/python3.5/site-packages/tornado/web.py", line 2949, in wrapper
    return method(self, *args, **kwargs)

  File "/opt/conda/lib/python3.5/site-packages/notebook/notebook/handlers.py", line 59, in get
    get_custom_frontend_exporters=get_custom_frontend_exporters

  File "/opt/conda/lib/python3.5/site-packages/notebook/base/handlers.py", line 424, in render_template
    return template.render(**ns)

  File "/opt/conda/lib/python3.5/site-packages/jinja2/environment.py", line 1008, in render
    return self.environment.handle_exception(exc_info, True)

  File "/opt/conda/lib/python3.5/site-packages/jinja2/environment.py", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)

  File "/opt/conda/lib/python3.5/site-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)

  File "/opt/conda/lib/python3.5/site-packages/notebook/templates/notebook.html", line 1, in top-level template code
    {% extends "page.html" %}

  File "/opt/conda/lib/python3.5/site-packages/notebook/templates/page.html", line 154, in top-level template code
    {% block header %}
  File "/opt/conda/lib/python3.5/site-packages/notebook/templates/notebook.html", line 117, in block "header"
    {% for exporter in get_custom_frontend_exporters() %}

  File "/opt/conda/lib/python3.5/site-packages/notebook/notebook/handlers.py", line 19, in get_custom_frontend_exporters

    from nbconvert.exporters.base import get_export_names, get_exporter
ImportError: No module named 'nbconvert.exporters.base'

`

`[E 16:28:19.589 NotebookApp] {
"Accept-Language": "es-ES,es;q=0.9,en;q=0.8",

  "Referer": "http://localhost:9000/tree",

  "Connection": "keep-alive",

  "Upgrade-Insecure-Requests": "1",

  "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
  "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36",

  "Accept-Encoding": "gzip, deflate, br",

  "Host": "localhost:9000",

  "Cookie": "_xsrf=2|30dc6bc1|925f04f0c8e226ab5e57b1903bb65cda|1527375677"
}`

[E 16:28:19.591 NotebookApp] 500 GET /notebooks/Untitled1.ipynb?kernel_name=python3 (172.17.0.1) 21.65ms referer=http://localhost:9000/tree

[gaulinmp]

If it helps, I just got this error, and restarting jupyter lab fixed it. I suspect it was from running conda update while jupyter was running.

[matthijskooijman]

I also ran into this issue, which turned out to be caused by having older version of nbconvert (4.2.0) with a newer version of notebook (5.5.0). I originally had notebook and nbconvert installed through Debian packages, but then (accidentally, or indirectly through another dependency, I suppose) installed a newer version of notebook. Since the dependency declared by notebook is only nbconvert, without any version constraints, pip did not install a newer version of nbconvert too.

For me the fix was to upgrade the nbconvert package manually: pip3 install --upgrade --user nbconvert

Perhaps the real bug here is that the nbconvert dependency is not versioned, though I'm not sure what conventions pip/pypy uses for that?

[jarascript]

I checked this issue https://github.com/matplotlib/jupyter-matplotlib/issues/9 and it worked for me

[JiaLeXian]

I had the same problem with 500 error on amazon EC2 with Safari. Problem solved with openning with Chrome.

[sbamin]

I ran into similar error but due to a broken symlink (or inaccessible directory) under / location. Since this was on shared linux box, I could not fix that symlink (meant for other groups). So, I changed base directory under which I run jupyter to be home/foo, and then error disappeared. I could then set symlinks to upstream paths from my home directory and access those contents from jupyter session. Doubt if that is a right way for a server (?tornado) to allow traversing upstream of base path, /home/foo even if I've access to those contents.

      File "/anaconda/lib/python3.6/site-packages/notebook/services/contents/filemanager.py", line 337, in _dir_model
        if self.should_list(name) and not is_file_hidden(os_path, stat_res=st):
      File "/anaconda/lib/python3.6/site-packages/notebook/utils.py", line 146, in is_file_hidden_posix
        stat_res = os.stat(abs_path)
    PermissionError: [Errno 13] Permission denied: '/Sequence_pool'

[Ata1362]

There are many complicated factors that may cause this that experts have mentioned them already. BUT there are some silly matters that may casue this problem as well.
Please disable your AnitVirus or any protecting application you have then try to run Notebook again.
GL

[CicoZhang]

I am also suffering from this issue now. The Jupyter is running on a server and I am opening it from my browser.

[edumorlom]

I am also seeing this issue after updating all of my packages using conda on 3.6.8.

[E 16:47:19.988 NotebookApp] Uncaught exception GET /notebooks/DBFS%20normalizer.ipynb (::1)
    HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/notebooks/DBFS%20normalizer.ipynb', version='HTTP/1.1', remote_ip='::1')
    Traceback (most recent call last):
      File "/usr/local/anaconda3/lib/python3.6/site-packages/tornado/web.py", line 1697, in _execute
        result = method(*self.path_args, **self.path_kwargs)
      File "/usr/local/anaconda3/lib/python3.6/site-packages/tornado/web.py", line 3174, in wrapper
        return method(self, *args, **kwargs)
      File "/usr/local/anaconda3/lib/python3.6/site-packages/notebook/notebook/handlers.py", line 59, in get
        get_custom_frontend_exporters=get_custom_frontend_exporters
      File "/usr/local/anaconda3/lib/python3.6/site-packages/notebook/base/handlers.py", line 519, in render_template
        return template.render(**ns)
      File "/usr/local/anaconda3/lib/python3.6/site-packages/jinja2/asyncsupport.py", line 76, in render
        return original_render(self, *args, **kwargs)
      File "/usr/local/anaconda3/lib/python3.6/site-packages/jinja2/environment.py", line 1008, in render
        return self.environment.handle_exception(exc_info, True)
      File "/usr/local/anaconda3/lib/python3.6/site-packages/jinja2/environment.py", line 780, in handle_exception
        reraise(exc_type, exc_value, tb)
      File "/usr/local/anaconda3/lib/python3.6/site-packages/jinja2/_compat.py", line 37, in reraise
        raise value.with_traceback(tb)
      File "/usr/local/anaconda3/lib/python3.6/site-packages/notebook/templates/notebook.html", line 1, in top-level template code
        {% extends "page.html" %}
      File "/usr/local/anaconda3/lib/python3.6/site-packages/notebook/templates/page.html", line 154, in top-level template code
        {% block header %}
      File "/usr/local/anaconda3/lib/python3.6/site-packages/notebook/templates/notebook.html", line 120, in block "header"
        {% for exporter in get_custom_frontend_exporters() %}
      File "/usr/local/anaconda3/lib/python3.6/site-packages/notebook/notebook/handlers.py", line 19, in get_custom_frontend_exporters
        from nbconvert.exporters.base import get_export_names, get_exporter
      File "/usr/local/anaconda3/lib/python3.6/site-packages/nbconvert/__init__.py", line 7, in <module>
        from . import postprocessors
      File "/usr/local/anaconda3/lib/python3.6/site-packages/nbconvert/postprocessors/__init__.py", line 5, in <module>
        from .serve import ServePostProcessor
      File "/usr/local/anaconda3/lib/python3.6/site-packages/nbconvert/postprocessors/serve.py", line 19, in <module>
        class ProxyHandler(web.RequestHandler):
      File "/usr/local/anaconda3/lib/python3.6/site-packages/nbconvert/postprocessors/serve.py", line 21, in ProxyHandler
        @web.asynchronous
    AttributeError: module 'tornado.web' has no attribute 'asynchronous'
[E 16:47:20.009 NotebookApp] {
      "Host": "localhost:8888",
      "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:67.0) Gecko/20100101 Firefox/67.0",
      "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
      "Accept-Language": "en-US,en;q=0.5",
      "Accept-Encoding": "gzip, deflate",
      "Dnt": "1",
      "Connection": "keep-alive",
      "Referer": "http://localhost:8888/tree",
      "Cookie": "username-localhost-8888=\"2|1:0|10:1552510035|23:username-localhost-8888|44:ZTc2ZjZkZThhNzQzNGZjYmFiMTM1ZGUwODJlMDUxN2U=|675c06a5a24d0422d49d4b17e663cca3d470c3ebd30b58baafd8b5c3ae911697\"; _xsrf=2|de519812|8b1fc2de081e5924cd80858bdbb46db2|1551662662",
      "Upgrade-Insecure-Requests": "1"
    }
[E 16:47:20.010 NotebookApp] 500 GET /notebooks/DBFS%20normalizer.ipynb (::1) 236.74ms referer=http://localhost:8888/tree

[lovettchris]

This fixed it for me:

pip install nbconvert==5.4.1

[nuistzhou]

This fixed it for me:

pip install nbconvert==5.4.1

This is the right way to go for me, solved!

[shern2]

I think we should use conda where possible.

conda update nbconvert

worked for me.

[Ata1362]

I am using Anaconda to run Jupyter notebook.
There are many sources can cause this error in my experience.
But one thing has been common for me: In one specific enviroment, I have not received any error but same time I get 500 ERROR by switching to another Environment.
What is different in these environments? " INSTALLED LIBs"
So try to install not many libs and step by step move on and add new libs to your environment and check the notebook then you will find what is the problem.
GL

[AhmedHany1987]

I think we should use conda where possible.

conda update nbconvert

worked for me.

This worked for me too and solved the issue

[RebolloM]

conda update conda fixed it for me

[soohyun525]

it fixed for me.

pip install nbconvert==5.4.1

[fllsuv]

conda update nbconvert fixed for me!

[MariamKA]

This fixed it for me:

pip install nbconvert==5.4.1

YAY! works!!!

[MHphysicist]

Worked for me too
conda update nbconvert

[Rishabh-gupta6]

PLEASE HELP!!!
I tried each and every possible suggestions... but nothing worked!!!

ON BROWSER - 500 : Internal Server Error

ON TERMINAL - (as follows)

[E 19:13:55.998 NotebookApp] Uncaught exception GET /notebooks/Desktop/IBM%20DS/C6/w1/DA0101EN-Review-Introduction.ipynb (::1)
HTTPServerRequest(protocol='http', host='localhost:8889', method='GET', uri='/notebooks/Desktop/IBM%20DS/C6/w1/DA0101EN-Review-Introduction.ipynb', version='HTTP/1.1', remote_ip='::1')
Traceback (most recent call last):
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\tornado\web.py", line 1703, in _execute
result = await result
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\tornado\gen.py", line 748, in run
yielded = self.gen.send(value)
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\notebook\notebook\handlers.py", line 95, in get
self.write(self.render_template('notebook.html',
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\notebookbase\handlers.py", line 507, in render_template
return template.render(*ns)
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\jinja2environment.py", line 1090, in render
self.environment.handle_exception()
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\jinja2environment.py", line 832, in handle_exception
reraise(rewrite_traceback_stack(source=source))
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\jinja2_compat.py", line 28, in reraise
raise value.with_traceback(tb)
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\notebook\templates\notebook.html", line 1, in top-level template code
{% extends "page.html" %}
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\notebook\templates\page.html", line 154, in top-level template code
{% block header %}
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\notebook\templates\notebook.html", line 114, in block "header"
{% for exporter in get_frontend_exporters() %}
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages\notebook\notebook\handlers.py", line 23, in get_frontend_exporters
from nbconvert.exporters.base import get_export_names, get_exporter
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packagesnbconvert__init__.py", line 4, in
from .exporters import *
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packagesnbconvert\exporters__init__.py", line 6, in
from .latex import LatexExporter
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packagesnbconvert\exporters\latex.py", line 13, in
from nbconvert.filters.filter_links import resolve_references
File "c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packagesnbconvert\filters\filter_links.py", line 7, in
from pandocfilters import RawInline, applyJSONFilters
ModuleNotFoundError: No module named 'pandocfilters'
[E 19:13:56.016 NotebookApp] {
"Host": "localhost:8889",
"Connection": "keep-alive",
"Upgrade-Insecure-Requests": "1",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36",
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9",
"Sec-Fetch-Site": "same-origin",
"Sec-Fetch-Mode": "navigate",
"Sec-Fetch-User": "?1",
"Sec-Fetch-Dest": "document",
"Referer": "http://localhost:8889/tree/Desktop/IBM%20DS/C6/w1",
"Accept-Encoding": "gzip, deflate, br",
"Accept-Language": "en-IN,en-GB;q=0.9,en-US;q=0.8,en;q=0.7",
"Cookie": "_xsrf=2|5e109279|0aae716fd16eaf00f0e13c942d22b048|1593452570; username-localhost-8888=\"2|1:0|10:1593697200|23:username-localhost-8888|44:YmI3YzQxOWJiZjhkNDc2NmI2NGZjMDJkZTA4NDllYWU=|cbf9932018c09ecf39cbd0fbef0a6022805d5bfbb754966085f8c45b2567d29a\"; username-localhost-8889=\"2|1:0|10:1593697428|23:username-localhost-8889|44:NTYwYmU2N2ZiZTk2NDhmNmEyYTRhNzMxOTZkZTNkY2M=|529d07b0707e38886547ba08c010a7bc94bc5b3d4fef1d0e0831fab30909a221\""
}
[E 19:13:56.017 NotebookApp] 500 GET /notebooks/Desktop/IBM%20DS/C6/w1/DA0101EN-Review-Introduction.ipynb (::1) 190.00ms referer=http://localhost:8889/tree/Desktop/IBM%20DS/C6/w1

[kevin-bates]

For whatever reason, it looks like you don't have the pandocfilters package - even though nbconvert has an explicit dependency on it. Try pip install pandocfilters.

[Rishabh-gupta6]

For whatever reason, it looks like you don't have the pandocfilters package - even though nbconvert has an explicit dependency on it. Try pip install pandocfilters.

Sir, Thank you for your reply!

but situation is still same...

PS C:\Users\SAURABH BRO> pip install pandocfilters
Requirement already satisfied: pandocfilters in c:\userssaurabh broappdata\local\programs\python\python38-32\libsite-packages (1.4.2)

[lovettchris]

Apparently there is now a new step you have to do to register the nbextensions, does this help?

python -m ipykernel install --user --name=<your_env_name>
jupyter nbextension enable --py --sys-prefix widgetsnbextension

[Rishabh-gupta6]

Apparently there is now a new step you have to do to register the nbextensions, does this help?

python -m ipykernel install --user --name=<your_env_name>
jupyter nbextension enable --py --sys-prefix widgetsnbextension

Dear Sirs(lovettchris & kevin-bates) ,

I respect and appreciate your replies but just a moment before I install the anaconda and my problem finally ended.

Thank you to both of you for your precious time and help full replies.

Best Regards,

Rishabh Gupta

[Muskan-creator]

C:\Users\ASUS>jupyter notebook
[W 17:22:17.778 NotebookApp] Terminals not available (error was cannot import name 'PtyProcess' from 'winpty' (unknown location))
[I 17:22:17.794 NotebookApp] Loading IPython parallel extension
[I 17:22:17.794 NotebookApp] Serving notebooks from local directory: C:\Users\ASUS
[I 17:22:17.794 NotebookApp] Jupyter Notebook 6.1.3 is running at:
[I 17:22:17.794 NotebookApp] http://localhost:8888/?token=0f1c695284aec9c7c6d3304fb4834c67a6150e14d20480d8
[I 17:22:17.794 NotebookApp] or http://127.0.0.1:8888/?token=0f1c695284aec9c7c6d3304fb4834c67a6150e14d20480d8
[I 17:22:17.794 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 17:22:17.856 NotebookApp]

To access the notebook, open this file in a browser:
    file:///C:/Users/ASUS/AppData/Roaming/jupyter/runtime/nbserver-16916-open.html
Or copy and paste one of these URLs:
    http://localhost:8888/?token=0f1c695284aec9c7c6d3304fb4834c67a6150e14d20480d8
 or http://127.0.0.1:8888/?token=0f1c695284aec9c7c6d3304fb4834c67a6150e14d20480d8

[I 17:22:32.503 NotebookApp] Creating new notebook in
[E 17:22:32.763 NotebookApp] Uncaught exception GET /notebooks/Untitled26.ipynb?kernel_name=python3 (::1)
HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/notebooks/Untitled26.ipynb?kernel_name=python3', version='HTTP/1.1', remote_ip='::1')
Traceback (most recent call last):
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\tornado\web.py", line 1703, in _execute
result = await result
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\tornado\gen.py", line 748, in run
yielded = self.gen.send(value)
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\notebook\notebook\handlers.py", line 95, in get
self.write(self.render_template('notebook.html',
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\notebookbase\handlers.py", line 512, in render_template
return template.render(ns)
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\jinja2environment.py", line 1090, in render
self.environment.handle_exception()
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\jinja2environment.py", line 832, in handle_exception
reraise(rewrite_traceback_stack(source=source))
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\jinja2_compat.py", line 28, in reraise
raise value.with_traceback(tb)
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\notebook\templates\notebook.html", line 1, in top-level template code
{% extends "page.html" %}
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\notebook\templates\page.html", line 154, in top-level template code
{% block header %}
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\notebook\templates\notebook.html", line 115, in block "header"
{% for exporter in get_frontend_exporters() %}
File "c:\usersasusappdata\local\programs\python\python38-32\libsite-packages\notebook\notebook\handlers.py", line 23, in get_frontend_exporters
from nbconvert.exporters.base import get_export_names, get_exporter
File "C:\Users\ASUS\AppData\Roaming\Python\Python38site-packagesnbconvert__init__.py", line 4, in
from .exporters import *
File "C:\Users\ASUS\AppData\Roaming\Python\Python38site-packagesnbconvert\exporters__init__.py", line 6, in
from .latex import LatexExporter
File "C:\Users\ASUS\AppData\Roaming\Python\Python38site-packagesnbconvert\exporters\latex.py", line 13, in
from nbconvert.filters.filter_links import resolve_references
File "C:\Users\ASUS\AppData\Roaming\Python\Python38site-packagesnbconvert\filters\filter_links.py", line 7, in
from pandocfilters import RawInline, applyJSONFilters, stringify
ModuleNotFoundError: No module named 'pandocfilters'
[E 17:22:32.787 NotebookApp] {
"Host": "localhost:8888",
"Connection": "keep-alive",
"Upgrade-Insecure-Requests": "1",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36",
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9",
"Sec-Fetch-Site": "same-origin",
"Sec-Fetch-Mode": "navigate",
"Sec-Fetch-Dest": "document",
"Referer": "http://localhost:8888/tree",
"Accept-Encoding": "gzip, deflate, br",
"Accept-Language": "en-GB,en-US;q=0.9,en;q=0.8",
"Cookie": "_xsrf=2|1e7fee18|750e1c2da8a011a90a08a5f05f48107a|1597662801; username-localhost-8889=\"2|1:0|10:1599023781|23:username-localhost-8889|44:MjMwNDQ2YWYxOGViNDBkNWJkZTQxOGYyOGQyMzEyZDQ=|71348605b7521f6a4cdafe64fb80f0b212dc9b46cfdae05ea935a87281fd5a03\"; username-localhost-8888=\"2|1:0|10:1600084339|23:username-localhost-8888|44:NDViM2EzNmM4ZTQwNDZjMGJmOTY3YThiYTU2ZWMyZWI=|2311e5d0a1e9c52dddb0698001f701da0e65128da8451d531209129fb5ade545\""
}
[E 17:22:32.787 NotebookApp] 500 GET /notebooks/Untitled26.ipynb?kernel_name=python3 (::1) 224.63ms referer=http://localhost:8888/tree
*Please anyone resolve this issue .I have tried everything but nothing works

[lovettchris]

> ModuleNotFoundError: No module named 'pandocfilters'

Try creating clean python environment. I just created a new anaconda environment for python 3.6 on windows 10 using anaconda, added "pip install jupyter" and it works fine, and "jupyter notebook" works fine.

[nidhimakdani]

This fixed it for me:

pip install nbconvert==5.4.1

[hieuxuanta]

This fixed it for me:

pip install nbconvert==5.4.1

When I try this, I can open .ipynb but when I run my project, The system said "The kernel is starting..." and I can not run the project. Could you guys give me a solution? Thanks!

[Ata1362]

The last thing I did and solved the problem for was to remove the Jupyter
and install it again. Worked two times and now.

On Thu, 8 Oct 2020, 12:58 Ta Hieu, [e-mail] wrote:

This fixed it for me:

pip install nbconvert==5.4.1

When I try this, I can open .ipynb but when I run my project, The system
said "The kernel is starting..." and I can not run the project. Could you
guys give me a solution? Thanks!

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[vovkapultik]

Try to start it with sudo jupyter notebook --allow-root

[freepoet]

This fixed it for me:

pip install nbconvert==5.4.1

it fixed for me too, thx!!~