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Error on starting Jupyter Lab: "Unable to find server plugin version, consider upgrading."

See original GitHub issue

Checklist prior to opening an issue

  • I have followed fully the installation steps laid out in the documentation site.
  • I have restarted jupyterlab.
  • I have read the FAQ section in the documentation site.

Describe the bug I know that issue #111 is basically the same, however, I have repeated all the same steps and I’m still getting the same error and I’m not able to format my code. Another difference I noticed is that when I print out both extension lists, the first line says Config option 'kernel_spec_manager_class' not recognized by 'ListLabExtensionsApp'. I’m not sure if this has anything to do with it or not.

Diagnostic commands Please attach the output of the following commands (please format them properly)

  • pip freeze
# Name                    Version                   Build  Channel
_libgcc_mutex             0.1                 conda_forge    conda-forge
_openmp_mutex             4.5                       1_gnu    conda-forge
anaconda-client           1.7.2                      py_0    conda-forge
anaconda-navigator        1.9.12                   py38_0
appdirs                   1.4.4                      py_0
argon2-cffi               20.1.0           py38h1e0a361_1    conda-forge
arrow                     0.17.0           py38h32f6830_0    conda-forge
async_generator           1.10                       py_0    conda-forge
attrs                     20.2.0             pyh9f0ad1d_0    conda-forge
backcall                  0.2.0              pyh9f0ad1d_0    conda-forge
backports                 1.0                        py_2    conda-forge
backports.functools_lru_cache 1.6.1                      py_0    conda-forge
backports.tempfile        1.0                        py_0    conda-forge
backports.weakref         1.0.post1       py38h32f6830_1001    conda-forge
beautifulsoup4            4.9.3              pyhb0f4dca_0    conda-forge
binaryornot               0.4.4                      py_1    conda-forge
black                     19.10b0                    py_0
bleach                    3.2.1              pyh9f0ad1d_0    conda-forge
brotlipy                  0.7.0           py38h1e0a361_1000    conda-forge
bzip2                     1.0.8                h516909a_3    conda-forge
ca-certificates           2020.7.22                     0
certifi                   2020.6.20                py38_0
cffi                      1.14.3           py38he30daa8_0
chardet                   3.0.4           py38h32f6830_1007    conda-forge
click                     7.1.2              pyh9f0ad1d_0    conda-forge
clyent                    1.2.2                      py_1    conda-forge
colorama                  0.4.3                    pypi_0    pypi
conda                     4.8.5                    py38_0
conda-build               3.18.11                  py38_0
conda-env                 2.6.0                         1
conda-package-handling    1.7.0            py38h1e0a361_5    conda-forge
conda-verify              3.4.2                      py_1
cookiecutter              1.7.2              pyh9f0ad1d_0    conda-forge
cryptography              3.1.1            py38h766eaa4_0    conda-forge
dbus                      1.13.16              hb2f20db_0
decorator                 4.4.2                      py_0    conda-forge
defusedxml                0.6.0                      py_0    conda-forge
entrypoints               0.3             py38h32f6830_1001    conda-forge
expat                     2.2.9                he1b5a44_2    conda-forge
filelock                  3.0.12             pyh9f0ad1d_0    conda-forge
fontconfig                2.13.1            he4413a7_1000    conda-forge
freetype                  2.10.2               he06d7ca_0    conda-forge
future                    0.18.2           py38h32f6830_1    conda-forge
gitdb                     4.0.5                    pypi_0    pypi
gitpython                 3.1.9                    pypi_0    pypi
glib                      2.65.0               h3eb4bd4_0
glob2                     0.7                        py_0    conda-forge
gst-plugins-base          1.14.0               hbbd80ab_1
gstreamer                 1.14.0               hb31296c_0
icu                       58.2              hf484d3e_1000    conda-forge
idna                      2.10               pyh9f0ad1d_0    conda-forge
importlib-metadata        2.0.0            py38h32f6830_0    conda-forge
importlib_metadata        2.0.0                         0    conda-forge
ipykernel                 5.3.4            py38h23f93f0_0    conda-forge
ipython                   7.18.1           py38h1cdfbd6_0    conda-forge
ipython_genutils          0.2.0                      py_1    conda-forge
jedi                      0.17.2           py38h32f6830_0    conda-forge
jinja2                    2.11.2             pyh9f0ad1d_0    conda-forge
jinja2-time               0.2.0                      py_2    conda-forge
jpeg                      9d                   h516909a_0    conda-forge
json5                     0.9.5              pyh9f0ad1d_0    conda-forge
jsonschema                3.2.0            py38h32f6830_1    conda-forge
jupyter_client            6.1.7                      py_0    conda-forge
jupyter_core              4.6.3            py38h32f6830_1    conda-forge
jupyterlab                2.2.8                      py_0    conda-forge
jupyterlab-code-formatter 1.3.6                    pypi_0    pypi
jupyterlab-git            0.22.0                   pypi_0    pypi
jupyterlab_pygments       0.1.2              pyh9f0ad1d_0    conda-forge
jupyterlab_server         1.2.0                      py_0    conda-forge
lcms2                     2.11                 hbd6801e_0    conda-forge
ld_impl_linux-64          2.35                 h769bd43_9    conda-forge
libarchive                3.3.3             hb44662c_1005    conda-forge
libffi                    3.3                  he6710b0_2
libgcc-ng                 9.3.0               h5dbcf3e_17    conda-forge
libgomp                   9.3.0               h5dbcf3e_17    conda-forge
libiconv                  1.16                 h516909a_0    conda-forge
liblief                   0.10.1               he1b5a44_1    conda-forge
libpng                    1.6.37               hed695b0_2    conda-forge
libsodium                 1.0.18               h516909a_1    conda-forge
libstdcxx-ng              9.3.0               h2ae2ef3_17    conda-forge
libtiff                   4.1.0                hc7e4089_6    conda-forge
libuuid                   2.32.1            h14c3975_1000    conda-forge
libwebp-base              1.1.0                h516909a_3    conda-forge
libxcb                    1.13              h14c3975_1002    conda-forge
libxml2                   2.9.9                h13577e0_2    conda-forge
lz4-c                     1.8.3             he1b5a44_1001    conda-forge
lzo                       2.10              h516909a_1000    conda-forge
markupsafe                1.1.1            py38h1e0a361_1    conda-forge
mistune                   0.8.4           py38h1e0a361_1001    conda-forge
mypy_extensions           0.4.3                    py38_0
navigator-updater         0.2.1                    py38_0
nb_conda                  2.2.1                    py38_1
nb_conda_kernels          2.3.0            py38h32f6830_1    conda-forge
nbclient                  0.5.0                      py_0    conda-forge
nbconvert                 6.0.7            py38h32f6830_0    conda-forge
nbdime                    2.1.0                    pypi_0    pypi
nbformat                  5.0.7                      py_0    conda-forge
ncurses                   6.2                  he1b5a44_1    conda-forge
nest-asyncio              1.4.1                      py_0    conda-forge
notebook                  6.1.4            py38h32f6830_0    conda-forge
olefile                   0.46                       py_0    conda-forge
openssl                   1.1.1h               h7b6447c_0
packaging                 20.4               pyh9f0ad1d_0    conda-forge
pandoc                    2.10.1               h516909a_0    conda-forge
pandocfilters             1.4.2                      py_1    conda-forge
parso                     0.7.1              pyh9f0ad1d_0    conda-forge
patchelf                  0.11                 he1b5a44_0    conda-forge
pathspec                  0.7.0                      py_0
pcre                      8.44                 he1b5a44_0    conda-forge
pexpect                   4.8.0            py38h32f6830_1    conda-forge
pickleshare               0.7.5           py38h32f6830_1001    conda-forge
pillow                    7.2.0            py38h9776b28_1    conda-forge
pip                       20.2.3                     py_0    conda-forge
pkginfo                   1.5.0.1                    py_0    conda-forge
poyo                      0.5.0                      py_0    conda-forge
prometheus_client         0.8.0              pyh9f0ad1d_0    conda-forge
prompt-toolkit            3.0.7                      py_0    conda-forge
psutil                    5.7.2            py38h1e0a361_0    conda-forge
pthread-stubs             0.4               h14c3975_1001    conda-forge
ptyprocess                0.6.0                   py_1001    conda-forge
py-lief                   0.10.1           py38h950e882_1    conda-forge
pycosat                   0.6.3           py38h1e0a361_1004    conda-forge
pycparser                 2.20               pyh9f0ad1d_2    conda-forge
pygments                  2.7.1                      py_0    conda-forge
pyopenssl                 19.1.0                     py_1    conda-forge
pyparsing                 2.4.7              pyh9f0ad1d_0    conda-forge
pyqt                      5.9.2            py38h05f1152_4
pyrsistent                0.17.3           py38h1e0a361_0    conda-forge
pysocks                   1.7.1            py38h32f6830_1    conda-forge
python                    3.8.3                hcff3b4d_2
python-dateutil           2.8.1                      py_0    conda-forge
python-libarchive-c       2.9              py38h32f6830_1    conda-forge
python-slugify            4.0.1              pyh9f0ad1d_0    conda-forge
python_abi                3.8                      1_cp38    conda-forge
pytz                      2020.1             pyh9f0ad1d_0    conda-forge
pyyaml                    5.3.1            py38h1e0a361_0    conda-forge
pyzmq                     19.0.2           py38ha71036d_1    conda-forge
qt                        5.9.7                h5867ecd_1
qtpy                      1.9.0                      py_0    conda-forge
readline                  8.0                  he28a2e2_2    conda-forge
regex                     2020.7.14        py38h7b6447c_0
requests                  2.24.0             pyh9f0ad1d_0    conda-forge
ripgrep                   12.1.1               h516909a_0    conda-forge
ruamel_yaml               0.15.80         py38h1e0a361_1002    conda-forge
send2trash                1.5.0                      py_0    conda-forge
setuptools                49.6.0           py38h32f6830_1    conda-forge
sip                       4.19.13          py38he6710b0_0
six                       1.15.0             pyh9f0ad1d_0    conda-forge
smmap                     3.0.4                    pypi_0    pypi
soupsieve                 2.0.1                      py_1    conda-forge
sqlite                    3.33.0               h4cf870e_1    conda-forge
terminado                 0.9.1            py38h32f6830_0    conda-forge
testpath                  0.4.4                      py_0    conda-forge
text-unidecode            1.3                        py_0    conda-forge
tk                        8.6.10               hed695b0_1    conda-forge
toml                      0.10.1                     py_0
tornado                   6.0.4            py38h1e0a361_1    conda-forge
tqdm                      4.50.1             pyh9f0ad1d_0    conda-forge
traitlets                 5.0.4                      py_1    conda-forge
typed-ast                 1.4.1            py38h7b6447c_0
typing_extensions         3.7.4.3                    py_0
unidecode                 1.1.1                      py_0    conda-forge
urllib3                   1.25.10                    py_0    conda-forge
wcwidth                   0.2.5              pyh9f0ad1d_2    conda-forge
webencodings              0.5.1                      py_1    conda-forge
wheel                     0.35.1             pyh9f0ad1d_0    conda-forge
whichcraft                0.6.1                      py_0    conda-forge
xmltodict                 0.12.0                     py_0    conda-forge
xorg-libxau               1.0.9                h14c3975_0    conda-forge
xorg-libxdmcp             1.1.3                h516909a_0    conda-forge
xz                        5.2.5                h516909a_1    conda-forge
yaml                      0.2.5                h516909a_0    conda-forge
zeromq                    4.3.3                he1b5a44_2    conda-forge
zipp                      3.3.0                      py_0    conda-forge
zlib                      1.2.11            h516909a_1009    conda-forge
zstd                      1.4.4                h3b9ef0a_2    conda-forge
  • jupyter labextension list
Config option `kernel_spec_manager_class` not recognized by `ListLabExtensionsApp`.
JupyterLab v2.2.8
Known labextensions:
   app dir: /home/mgoti/anaconda3/share/jupyter/lab
        @jupyterlab/git v0.22.0  enabled  OK
        @ryantam626/jupyterlab_code_formatter v1.3.6  enabled  OK
        nbdime-jupyterlab v2.0.1  enabled  OK
  • jupyter serverextension list
Config option `kernel_spec_manager_class` not recognized by `ListLabExtensionsApp`.
JupyterLab v2.2.8
Known labextensions:
   app dir: /home/mgoti/anaconda3/share/jupyter/lab
        @jupyterlab/git v0.22.0  enabled  OK
        @ryantam626/jupyterlab_code_formatter v1.3.6  enabled  OK
        nbdime-jupyterlab v2.0.1  enabled  OK
(base) [mgoti@localhost root]$ jupyter serverextension list
Config option `kernel_spec_manager_class` not recognized by `ListServerExtensionsApp`.
config dir: /home/mgoti/.jupyter
    jupyterlab_code_formatter  enabled
    - Validating...
      jupyterlab_code_formatter  OK
config dir: /home/mgoti/anaconda3/etc/jupyter
    jupyterlab  enabled
    - Validating...
      jupyterlab 2.2.8 OK
    jupyterlab_git  enabled
    - Validating...
      jupyterlab_git 0.22.0 OK
    nbdime  enabled
    - Validating...
      nbdime 2.1.0 OK

Screenshots image

Additional context Add any other context about the problem here.

Issue Analytics

  • State:closed
  • Created 3 years ago
  • Reactions:8
  • Comments:6 (2 by maintainers)

github_iconTop GitHub Comments

1reaction
a0thcommented, Oct 18, 2020

Holy moly, sorry about that, you are right, the jupyterlab_code_formatter was not in the environment.yml. Thank you very much!

0reactions
a0thcommented, Oct 18, 2020

Hey @ryantam626 , thanks for the reply.

Should @ryantam626/jupyterlab_code_formatter v1.3.6 enabled OK mean that the plugin is installed?

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