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[IPKernelApp] ERROR | No such comm target registered: jupyter.widget.control
See original GitHub issueDescription
When new kernel session is instantiated(new notebook) JLab logs:
[IPKernelApp] ERROR | No such comm target registered: jupyter.widget.control
[IPKernelApp] WARNING | No such comm: ded5178f-d06f-422a-851f-d7a4b564debb
Below is the context I just tried, but I tried with a lot of different versions combinations.
Reproduce
- clean env creation:
conda create -n ipywidgets_problem jupyterlab ipywidgets -y - activate env:
conda activate ipywidgets_problem - run JLab:
jupyter lab
Context
- ipywidgets version: 7.7.0
- JLab version: 3.4.0
- Operating System and version: Linux Ubuntu 20
- Browser and version: any, tried on Firefox, Brave, Safari
Troubleshoot Output
$PATH: /home/luka/miniconda3/envs/ipywidgets_problem/bin /home/luka/miniconda3/condabin /usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin /usr/games /usr/local/games /snap/binsys.path: /home/luka/miniconda3/envs/ipywidgets_problem/bin /home/luka/miniconda3/envs/ipywidgets_problem/lib/python310.zip /home/luka/miniconda3/envs/ipywidgets_problem/lib/python3.10 /home/luka/miniconda3/envs/ipywidgets_problem/lib/python3.10/lib-dynload /home/luka/miniconda3/envs/ipywidgets_problem/lib/python3.10/site-packages
sys.executable: /home/luka/miniconda3/envs/ipywidgets_problem/bin/python
sys.version: 3.10.4 | packaged by conda-forge | (main, Mar 24 2022, 17:39:04) [GCC 10.3.0]
platform.platform(): Linux-5.11.22-4-pve-x86_64-with-glibc2.31
which -a jupyter: /home/luka/miniconda3/envs/ipywidgets_problem/bin/jupyter
pip list: Package Version -------------------- --------- anyio 3.5.0 argon2-cffi 21.3.0 argon2-cffi-bindings 21.2.0 asttokens 2.0.5 attrs 21.4.0 Babel 2.10.1 backcall 0.2.0 beautifulsoup4 4.11.1 bleach 5.0.0 brotlipy 0.7.0 certifi 2021.10.8 cffi 1.15.0 charset-normalizer 2.0.12 cryptography 36.0.0 debugpy 1.6.0 decorator 5.1.1 defusedxml 0.7.1 entrypoints 0.4 executing 0.8.3 fastjsonschema 2.15.3 idna 3.3 importlib-metadata 4.11.3 importlib-resources 5.7.1 ipykernel 6.13.0 ipython 8.3.0 ipython-genutils 0.2.0 ipywidgets 7.7.0 jedi 0.18.1 Jinja2 3.1.2 json5 0.9.6 jsonschema 4.5.1 jupyter-client 7.3.0 jupyter-core 4.10.0 jupyter-server 1.17.0 jupyterlab 3.4.0 jupyterlab-pygments 0.2.2 jupyterlab-server 2.13.0 jupyterlab-widgets 1.1.0 MarkupSafe 2.1.1 matplotlib-inline 0.1.3 mistune 0.8.4 nbclassic 0.3.7 nbclient 0.6.2 nbconvert 6.5.0 nbformat 5.4.0 nest-asyncio 1.5.5 notebook 6.4.11 notebook-shim 0.1.0 packaging 21.3 pandocfilters 1.5.0 parso 0.8.3 pexpect 4.8.0 pickleshare 0.7.5 pip 22.0.4 prometheus-client 0.14.1 prompt-toolkit 3.0.29 psutil 5.9.0 ptyprocess 0.7.0 pure-eval 0.2.2 pycparser 2.21 Pygments 2.12.0 pyOpenSSL 22.0.0 pyparsing 3.0.8 pyrsistent 0.18.1 PySocks 1.7.1 python-dateutil 2.8.2 pytz 2022.1 pyzmq 22.3.0 requests 2.27.1 Send2Trash 1.8.0 setuptools 62.1.0 six 1.16.0 sniffio 1.2.0 soupsieve 2.3.1 stack-data 0.2.0 terminado 0.13.3 tinycss2 1.1.1 tornado 6.1 traitlets 5.1.1 typing_extensions 4.2.0 urllib3 1.26.9 wcwidth 0.2.5 webencodings 0.5.1 websocket-client 1.3.2 wheel 0.37.1 widgetsnbextension 3.6.0 zipp 3.8.0
conda list: # packages in environment at /home/luka/miniconda3/envs/ipywidgets_problem: # # Name Version Build Channel _libgcc_mutex 0.1 conda_forge conda-forge _openmp_mutex 4.5 2_gnu conda-forge anyio 3.5.0 py310h06a4308_0
argon2-cffi 21.3.0 pyhd3eb1b0_0
argon2-cffi-bindings 21.2.0 py310h7f8727e_0
asttokens 2.0.5 pyhd3eb1b0_0
attrs 21.4.0 pyhd3eb1b0_0
babel 2.10.1 pyhd8ed1ab_0 conda-forge backcall 0.2.0 pyhd3eb1b0_0
beautifulsoup4 4.11.1 py310h06a4308_0
bleach 5.0.0 pyhd8ed1ab_0 conda-forge brotlipy 0.7.0 py310h7f8727e_1002
bzip2 1.0.8 h7b6447c_0
ca-certificates 2022.4.26 h06a4308_0
certifi 2021.10.8 py310hff52083_2 conda-forge cffi 1.15.0 py310hd667e15_1
charset-normalizer 2.0.12 pyhd8ed1ab_0 conda-forge cryptography 36.0.0 py310h9ce1e76_0
debugpy 1.6.0 py310hd8f1fbe_0 conda-forge decorator 5.1.1 pyhd3eb1b0_0
defusedxml 0.7.1 pyhd3eb1b0_0
entrypoints 0.4 py310h06a4308_0
executing 0.8.3 pyhd3eb1b0_0
idna 3.3 pyhd3eb1b0_0
importlib-metadata 4.11.3 py310h06a4308_0
importlib_metadata 4.11.3 hd3eb1b0_0
importlib_resources 5.7.1 pyhd8ed1ab_0 conda-forge ipykernel 6.13.0 py310hfdc917e_0 conda-forge ipython 8.3.0 py310h06a4308_0
ipython_genutils 0.2.0 pyhd3eb1b0_1
ipywidgets 7.7.0 pyhd8ed1ab_0 conda-forge jedi 0.18.1 py310h06a4308_1
jinja2 3.1.2 pyhd8ed1ab_0 conda-forge json5 0.9.6 pyhd3eb1b0_0
jsonschema 4.5.1 pyhd8ed1ab_0 conda-forge jupyter_client 7.3.0 pyhd8ed1ab_0 conda-forge jupyter_core 4.10.0 py310h06a4308_0
jupyter_server 1.17.0 pyhd8ed1ab_0 conda-forge jupyterlab 3.4.0 pyhd8ed1ab_0 conda-forge jupyterlab_pygments 0.2.2 pyhd8ed1ab_0 conda-forge jupyterlab_server 2.13.0 pyhd8ed1ab_1 conda-forge jupyterlab_widgets 1.1.0 pyhd8ed1ab_0 conda-forge ld_impl_linux-64 2.36.1 hea4e1c9_2 conda-forge libffi 3.4.2 h295c915_2
libgcc-ng 11.2.0 h1d223b6_16 conda-forge libgomp 11.2.0 h1d223b6_16 conda-forge libnsl 2.0.0 h7f98852_0 conda-forge libsodium 1.0.18 h7b6447c_0
libstdcxx-ng 11.2.0 he4da1e4_16 conda-forge libuuid 2.32.1 h7f98852_1000 conda-forge libzlib 1.2.11 h166bdaf_1014 conda-forge markupsafe 2.1.1 py310h5764c6d_1 conda-forge matplotlib-inline 0.1.3 pyhd8ed1ab_0 conda-forge mistune 0.8.4 py310h7f8727e_1000
nbclassic 0.3.7 pyhd8ed1ab_0 conda-forge nbclient 0.6.2 pyhd8ed1ab_0 conda-forge nbconvert 6.5.0 pyhd8ed1ab_0 conda-forge nbconvert-core 6.5.0 pyhd8ed1ab_0 conda-forge nbconvert-pandoc 6.5.0 pyhd8ed1ab_0 conda-forge nbformat 5.4.0 pyhd8ed1ab_0 conda-forge ncurses 6.3 h7f8727e_2
nest-asyncio 1.5.5 py310h06a4308_0
notebook 6.4.11 py310h06a4308_0
notebook-shim 0.1.0 pyhd8ed1ab_0 conda-forge openssl 3.0.3 h166bdaf_0 conda-forge packaging 21.3 pyhd3eb1b0_0
pandoc 2.18 ha770c72_0 conda-forge pandocfilters 1.5.0 pyhd3eb1b0_0
parso 0.8.3 pyhd3eb1b0_0
pexpect 4.8.0 pyhd3eb1b0_3
pickleshare 0.7.5 pyhd3eb1b0_1003
pip 22.0.4 pyhd8ed1ab_0 conda-forge prometheus_client 0.14.1 pyhd8ed1ab_0 conda-forge prompt-toolkit 3.0.29 pyha770c72_0 conda-forge psutil 5.9.0 py310h5764c6d_1 conda-forge ptyprocess 0.7.0 pyhd3eb1b0_2
pure_eval 0.2.2 pyhd3eb1b0_0
pycparser 2.21 pyhd3eb1b0_0
pygments 2.12.0 pyhd8ed1ab_0 conda-forge pyopenssl 22.0.0 pyhd3eb1b0_0
pyparsing 3.0.8 pyhd8ed1ab_0 conda-forge pyrsistent 0.18.1 py310h5764c6d_1 conda-forge pysocks 1.7.1 py310h06a4308_0
python 3.10.4 h2660328_0_cpython conda-forge python-dateutil 2.8.2 pyhd3eb1b0_0
python-fastjsonschema 2.15.3 pyhd8ed1ab_0 conda-forge python_abi 3.10 2_cp310 conda-forge pytz 2022.1 pyhd8ed1ab_0 conda-forge pyzmq 22.3.0 py310h295c915_2
readline 8.1.2 h7f8727e_1
requests 2.27.1 pyhd3eb1b0_0
send2trash 1.8.0 pyhd3eb1b0_1
setuptools 62.1.0 py310hff52083_0 conda-forge six 1.16.0 pyhd3eb1b0_1
sniffio 1.2.0 py310h06a4308_1
soupsieve 2.3.1 pyhd3eb1b0_0
sqlite 3.38.5 h4ff8645_0 conda-forge stack_data 0.2.0 pyhd3eb1b0_0
terminado 0.13.3 py310hff52083_1 conda-forge tinycss2 1.1.1 pyhd8ed1ab_0 conda-forge tk 8.6.12 h27826a3_0 conda-forge tornado 6.1 py310h7f8727e_0
traitlets 5.1.1 pyhd3eb1b0_0
typing-extensions 4.2.0 hd8ed1ab_1 conda-forge typing_extensions 4.2.0 pyha770c72_1 conda-forge tzdata 2022a hda174b7_0
urllib3 1.26.9 py310h06a4308_0
wcwidth 0.2.5 pyhd3eb1b0_0
webencodings 0.5.1 py310h06a4308_1
websocket-client 1.3.2 pyhd8ed1ab_0 conda-forge wheel 0.37.1 pyhd3eb1b0_0
widgetsnbextension 3.6.0 py310hff52083_0 conda-forge xz 5.2.5 h7f8727e_1
zeromq 4.3.4 h2531618_0
zipp 3.8.0 pyhd8ed1ab_0 conda-forge zlib 1.2.11 h166bdaf_1014 conda-forgeconda env: name: ipywidgets_problem channels: - defaults - conda-forge dependencies: - _libgcc_mutex=0.1=conda_forge - _openmp_mutex=4.5=2_gnu - anyio=3.5.0=py310h06a4308_0 - argon2-cffi=21.3.0=pyhd3eb1b0_0 - argon2-cffi-bindings=21.2.0=py310h7f8727e_0 - asttokens=2.0.5=pyhd3eb1b0_0 - attrs=21.4.0=pyhd3eb1b0_0 - babel=2.10.1=pyhd8ed1ab_0 - backcall=0.2.0=pyhd3eb1b0_0 - beautifulsoup4=4.11.1=py310h06a4308_0 - bleach=5.0.0=pyhd8ed1ab_0 - brotlipy=0.7.0=py310h7f8727e_1002 - bzip2=1.0.8=h7b6447c_0 - ca-certificates=2022.4.26=h06a4308_0 - certifi=2021.10.8=py310hff52083_2 - cffi=1.15.0=py310hd667e15_1 - charset-normalizer=2.0.12=pyhd8ed1ab_0 - cryptography=36.0.0=py310h9ce1e76_0 - debugpy=1.6.0=py310hd8f1fbe_0 - decorator=5.1.1=pyhd3eb1b0_0 - defusedxml=0.7.1=pyhd3eb1b0_0 - entrypoints=0.4=py310h06a4308_0 - executing=0.8.3=pyhd3eb1b0_0 - idna=3.3=pyhd3eb1b0_0 - importlib-metadata=4.11.3=py310h06a4308_0 - importlib_metadata=4.11.3=hd3eb1b0_0 - importlib_resources=5.7.1=pyhd8ed1ab_0 - ipykernel=6.13.0=py310hfdc917e_0 - ipython=8.3.0=py310h06a4308_0 - ipython_genutils=0.2.0=pyhd3eb1b0_1 - ipywidgets=7.7.0=pyhd8ed1ab_0 - jedi=0.18.1=py310h06a4308_1 - jinja2=3.1.2=pyhd8ed1ab_0 - json5=0.9.6=pyhd3eb1b0_0 - jsonschema=4.5.1=pyhd8ed1ab_0 - jupyter_client=7.3.0=pyhd8ed1ab_0 - jupyter_core=4.10.0=py310h06a4308_0 - jupyter_server=1.17.0=pyhd8ed1ab_0 - jupyterlab=3.4.0=pyhd8ed1ab_0 - jupyterlab_pygments=0.2.2=pyhd8ed1ab_0 - jupyterlab_server=2.13.0=pyhd8ed1ab_1 - jupyterlab_widgets=1.1.0=pyhd8ed1ab_0 - ld_impl_linux-64=2.36.1=hea4e1c9_2 - libffi=3.4.2=h295c915_2 - libgcc-ng=11.2.0=h1d223b6_16 - libgomp=11.2.0=h1d223b6_16 - libnsl=2.0.0=h7f98852_0 - libsodium=1.0.18=h7b6447c_0 - libstdcxx-ng=11.2.0=he4da1e4_16 - libuuid=2.32.1=h7f98852_1000 - libzlib=1.2.11=h166bdaf_1014 - markupsafe=2.1.1=py310h5764c6d_1 - matplotlib-inline=0.1.3=pyhd8ed1ab_0 - mistune=0.8.4=py310h7f8727e_1000 - nbclassic=0.3.7=pyhd8ed1ab_0 - nbclient=0.6.2=pyhd8ed1ab_0 - nbconvert=6.5.0=pyhd8ed1ab_0 - nbconvert-core=6.5.0=pyhd8ed1ab_0 - nbconvert-pandoc=6.5.0=pyhd8ed1ab_0 - nbformat=5.4.0=pyhd8ed1ab_0 - ncurses=6.3=h7f8727e_2 - nest-asyncio=1.5.5=py310h06a4308_0 - notebook=6.4.11=py310h06a4308_0 - notebook-shim=0.1.0=pyhd8ed1ab_0 - openssl=3.0.3=h166bdaf_0 - packaging=21.3=pyhd3eb1b0_0 - pandoc=2.18=ha770c72_0 - pandocfilters=1.5.0=pyhd3eb1b0_0 - parso=0.8.3=pyhd3eb1b0_0 - pexpect=4.8.0=pyhd3eb1b0_3 - pickleshare=0.7.5=pyhd3eb1b0_1003 - pip=22.0.4=pyhd8ed1ab_0 - prometheus_client=0.14.1=pyhd8ed1ab_0 - prompt-toolkit=3.0.29=pyha770c72_0 - psutil=5.9.0=py310h5764c6d_1 - ptyprocess=0.7.0=pyhd3eb1b0_2 - pure_eval=0.2.2=pyhd3eb1b0_0 - pycparser=2.21=pyhd3eb1b0_0 - pygments=2.12.0=pyhd8ed1ab_0 - pyopenssl=22.0.0=pyhd3eb1b0_0 - pyparsing=3.0.8=pyhd8ed1ab_0 - pyrsistent=0.18.1=py310h5764c6d_1 - pysocks=1.7.1=py310h06a4308_0 - python=3.10.4=h2660328_0_cpython - python-dateutil=2.8.2=pyhd3eb1b0_0 - python-fastjsonschema=2.15.3=pyhd8ed1ab_0 - python_abi=3.10=2_cp310 - pytz=2022.1=pyhd8ed1ab_0 - pyzmq=22.3.0=py310h295c915_2 - readline=8.1.2=h7f8727e_1 - requests=2.27.1=pyhd3eb1b0_0 - send2trash=1.8.0=pyhd3eb1b0_1 - setuptools=62.1.0=py310hff52083_0 - six=1.16.0=pyhd3eb1b0_1 - sniffio=1.2.0=py310h06a4308_1 - soupsieve=2.3.1=pyhd3eb1b0_0 - sqlite=3.38.5=h4ff8645_0 - stack_data=0.2.0=pyhd3eb1b0_0 - terminado=0.13.3=py310hff52083_1 - tinycss2=1.1.1=pyhd8ed1ab_0 - tk=8.6.12=h27826a3_0 - tornado=6.1=py310h7f8727e_0 - traitlets=5.1.1=pyhd3eb1b0_0 - typing-extensions=4.2.0=hd8ed1ab_1 - typing_extensions=4.2.0=pyha770c72_1 - tzdata=2022a=hda174b7_0 - urllib3=1.26.9=py310h06a4308_0 - wcwidth=0.2.5=pyhd3eb1b0_0 - webencodings=0.5.1=py310h06a4308_1 - websocket-client=1.3.2=pyhd8ed1ab_0 - wheel=0.37.1=pyhd3eb1b0_0 - widgetsnbextension=3.6.0=py310hff52083_0 - xz=5.2.5=h7f8727e_1 - zeromq=4.3.4=h2531618_0 - zipp=3.8.0=pyhd8ed1ab_0 - zlib=1.2.11=h166bdaf_1014 prefix: /home/luka/miniconda3/envs/ipywidgets_problem
Installed Labextensions
JupyterLab v3.4.0
/home/luka/miniconda3/envs/ipywidgets_problem/share/jupyter/labextensions
jupyterlab_pygments v0.2.2 enabled OK (python, jupyterlab_pygments)
@jupyter-widgets/jupyterlab-manager v3.1.0 enabled OK (python, jupyterlab_widgets)
Issue Analytics
- State:
- Created a year ago
- Reactions:17
- Comments:15 (4 by maintainers)
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same message
@irealmatin
I did a fresh install a few days ago, but this problem still exists. There isn’t a solution yet, but my recommendation is to wait patiently for a fix. It is a harmless error according to everything that has been posted in any of the issues or forum posts related to it.
Here is the current state: https://github.com/jupyter-widgets/ipywidgets/issues/2257#issuecomment-1230974836