Description
With a fresh install of jupyterlab and voilà, the ipywidgets are not rendered while they are correctly displayed by jupyterlab.
After clicking on it:
Reproduce
Step1 : install environment
In a terminal
pip install jupyterlab ipywidgets voila
Step2 : create the following notebook "issue.ipynb" containing the following code:
from ipywidgets import Button
Button(description="button 1")
In a terminal
voila issue.ipynb
Open the result in your browser at http://localhost:8866/
As it works perfectly in jupyterlab (no error in the browser console), I suspect a problem with voila or related libraries.
The complete javascript error message is :
Open Browser Console for more detailed log - Double click to close this message]
Failed to load model class 'ButtonModel' from module '@jupyter-widgets/controls'
loadClass@http://localhost:8866/voila/templates/lab/static/voila.js?v=8db1cadbfba43a6dfc2d64128318e696bcb26b1783db1b991faf7404d438cd53200b6c434c4897064c090b68aa1151cd96c6dab50c3e138553365e6b30889172:458:117211
loadClass@http://localhost:8866/voila/templates/lab/static/voila.js?v=8db1cadbfba43a6dfc2d64128318e696bcb26b1783db1b991faf7404d438cd53200b6c434c4897064c090b68aa1151cd96c6dab50c3e138553365e6b30889172:472:57590
loadModelClass@http://localhost:8866/voila/templates/lab/static/voila.js?v=8db1cadbfba43a6dfc2d64128318e696bcb26b1783db1b991faf7404d438cd53200b6c434c4897064c090b68aa1151cd96c6dab50c3e138553365e6b30889172:458:114981
_make_model@http://localhost:8866/voila/templates/lab/static/voila.js?v=8db1cadbfba43a6dfc2d64128318e696bcb26b1783db1b991faf7404d438cd53200b6c434c4897064c090b68aa1151cd96c6dab50c3e138553365e6b30889172:458:111788
new_model@http://localhost:8866/voila/templates/lab/static/voila.js?v=8db1cadbfba43a6dfc2d64128318e696bcb26b1783db1b991faf7404d438cd53200b6c434c4897064c090b68aa1151cd96c6dab50c3e138553365e6b30889172:458:109385
_loadFromKernel/<@http://localhost:8866/voila/templates/lab/static/voila.js?v=8db1cadbfba43a6dfc2d64128318e696bcb26b1783db1b991faf7404d438cd53200b6c434c4897064c090b68aa1151cd96c6dab50c3e138553365e6b30889172:458:110659
_loadFromKernel@http://localhost:8866/voila/templates/lab/static/voila.js?v=8db1cadbfba43a6dfc2d64128318e696bcb26b1783db1b991faf7404d438cd53200b6c434c4897064c090b68aa1151cd96c6dab50c3e138553365e6b30889172:458:110549
I don't know if it is related but I noticed an error code 101 in the network connections (using Web Developer Tools from Firefox):
I also noticed the following error in the console log of FireFox
From my experience, from this last info, it is likely due to a problem of compatibility of versions of different modules.
Honestly I am a little bit lost with the ipywidgets ecosystem and I did several trial downgrading some packages without success.
I would be very happy if someone could help.
Expected behavior
I expect the button to be rendered :-) such as
Context
Installed versions:
jupyterlab==3.5.1
ipywidgets==7.7.2
voila==0.4.0
Jupyter labextension list:
JupyterLab v3.5.1
/home/user/.virtualenvs/jupyterlab3/share/jupyter/labextensions
jupyterlab_pygments v0.2.2 enabled OK (python, jupyterlab_pygments)
@jupyter-widgets/jupyterlab-manager v3.1.1 enabled OK (python, jupyterlab_widgets)
@voila-dashboards/jupyterlab-preview v2.2.0 enabled OK (python, voila)
OS version:
20.04.4 LTS (Focal Fossa)
Browser
Same issue on Firefox 107.0.1 (64-bits) and Chrome 107.0.5304.123
Note:
As you may notice from the info below, I am running all this in Ubuntu running using WSL and virtualenvwrapper but I feel that it has no impact on the problem as I had the same issue running the same tests from a Docker container.
Troubleshoot Output
Paste the output from running `jupyter troubleshoot` from the command line here.
You may want to sanitize the paths in the output.
```
$PATH:
/home/user/.virtualenvs/jupyterlab3/bin
/home/linuxbrew/.linuxbrew/bin
/home/linuxbrew/.linuxbrew/sbin
/home/user/.local/bin
/home/user/bin
/usr/local/sbin
/usr/local/bin
/usr/sbin
/usr/bin
/sbin
/bin
/usr/games
/usr/local/games
/usr/lib/wsl/lib
/mnt/c/Windows/System32
/mnt/c/Program Files/Docker/Docker/resources/bin
/mnt/c/ProgramData/DockerDesktop/version-bin
/mnt/c/Program Files/PowerShell/7/
/mnt/c/Users/user/AppData/Local/Microsoft/WindowsApps
/mnt/c/Users/user/go/bin
/mnt/c/Users/user/AppData/Local/Programs/IPFS Desktop/resources/app.asar.unpacked/src/ipfs-on-path/scripts/bin-win
/mnt/c/Program Files/7-Zip
/mnt/c/WINDOWS/System32/WindowsPowerShell/v1.0
/mnt/c/Users/user/AppData/Local/Programs/Microsoft VS Code/bin
/snap/bin
sys.path:
/home/user/.virtualenvs/jupyterlab3/bin
/usr/lib/python38.zip
/usr/lib/python3.8
/usr/lib/python3.8/lib-dynload
/home/user/.virtualenvs/jupyterlab3/lib/python3.8/site-packages
sys.executable:
/home/user/.virtualenvs/jupyterlab3/bin/python
sys.version:
3.8.10 (default, Jun 22 2022, 20:18:18)
[GCC 9.4.0]
platform.platform():
Linux-5.10.102.1-microsoft-standard-WSL2-x86_64-with-glibc2.29
which -a jupyter:
/home/user/.virtualenvs/jupyterlab3/bin/jupyter
pip list:
Package Version
-------------------- -----------
anyio 3.6.2
argon2-cffi 21.3.0
argon2-cffi-bindings 21.2.0
asttokens 2.2.1
attrs 22.1.0
Babel 2.11.0
backcall 0.2.0
beautifulsoup4 4.11.1
bleach 5.0.1
certifi 2022.9.24
cffi 1.15.1
charset-normalizer 2.1.1
debugpy 1.6.4
decorator 5.1.1
defusedxml 0.7.1
entrypoints 0.4
executing 1.2.0
fastjsonschema 2.16.2
idna 3.4
importlib-metadata 5.1.0
importlib-resources 5.10.1
ipykernel 6.17.1
ipython 8.7.0
ipython-genutils 0.2.0
ipywidgets 7.7.2
jedi 0.18.2
Jinja2 3.1.2
json5 0.9.10
jsonschema 4.17.3
jupyter_client 7.4.1
jupyter_core 5.1.0
jupyter-server 1.23.3
jupyterlab 3.5.1
jupyterlab-pygments 0.2.2
jupyterlab_server 2.16.3
jupyterlab-widgets 1.1.1
MarkupSafe 2.1.1
matplotlib-inline 0.1.6
mistune 2.0.4
nbclassic 0.4.8
nbclient 0.7.2
nbconvert 7.2.6
nbformat 5.7.0
nest-asyncio 1.5.6
notebook 6.5.2
notebook_shim 0.2.2
packaging 21.3
pandocfilters 1.5.0
parso 0.8.3
pexpect 4.8.0
pickleshare 0.7.5
pip 22.3.1
pkgutil_resolve_name 1.3.10
platformdirs 2.5.4
prometheus-client 0.15.0
prompt-toolkit 3.0.33
psutil 5.9.4
ptyprocess 0.7.0
pure-eval 0.2.2
pycparser 2.21
Pygments 2.13.0
pyparsing 3.0.9
pyrsistent 0.19.2
python-dateutil 2.8.2
pytz 2022.6
pyzmq 24.0.1
requests 2.28.1
Send2Trash 1.8.0
setuptools 65.5.1
six 1.16.0
sniffio 1.3.0
soupsieve 2.3.2.post1
stack-data 0.6.2
terminado 0.17.1
tinycss2 1.2.1
tomli 2.0.1
tornado 6.2
traitlets 5.6.0
urllib3 1.26.13
voila 0.4.0
wcwidth 0.2.5
webencodings 0.5.1
websocket-client 1.4.2
websockets 10.4
wheel 0.38.4
widgetsnbextension 3.6.1
zipp 3.11.0
<details><summary>Command Line Output</summary>
<pre>
Paste the output from your command line running `voila` here, use `--debug` if possible.
</pre>
voila --debug ipywidgets_issue.ipynb
[Voila] Looking for voila in /etc/jupyter
[Voila] Looking for voila in /usr/local/etc/jupyter
[Voila] Looking for voila in /home/user/.jupyter
[Voila] Looking for voila in /home/user/.virtualenvs/jupyterlab3/etc/jupyter
[Voila] using template: lab
[Voila] template paths:
/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates/lab
/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates/lab
/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates/base
/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates/base
/home/user/.virtualenvs/jupyterlab3/share/jupyter
/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates
/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates
/home/user/.local/share/jupyter
/home/user/.local/share/jupyter/voila/templates
/home/user/.local/share/jupyter/nbconvert/templates
/usr/local/share/jupyter
/usr/local/share/jupyter/voila/templates
/usr/local/share/jupyter/nbconvert/templates
/usr/share/jupyter
/usr/share/jupyter/voila/templates
/usr/share/jupyter/nbconvert/templates
[Voila] static paths:
/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates/lab/static
/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates/lab/static
/home/user/.local/share/jupyter/voila/templates/lab/static
/home/user/.local/share/jupyter/nbconvert/templates/lab/static
/usr/local/share/jupyter/voila/templates/lab/static
/usr/local/share/jupyter/nbconvert/templates/lab/static
/usr/share/jupyter/voila/templates/lab/static
/usr/share/jupyter/nbconvert/templates/lab/static
/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates/base/static
/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates/base/static
/home/user/.local/share/jupyter/voila/templates/base/static
/home/user/.local/share/jupyter/nbconvert/templates/base/static
/usr/local/share/jupyter/voila/templates/base/static
/usr/local/share/jupyter/nbconvert/templates/base/static
/usr/share/jupyter/voila/templates/base/static
/usr/share/jupyter/nbconvert/templates/base/static
[Voila] Using /tmp to store connection files
[Voila] Storing connection files in /tmp/voila_bj7m787e.
[Voila] Serving static files from /home/user/.virtualenvs/jupyterlab3/lib/python3.8/site-packages/voila/static.
[Voila] Voilà is running at:
http://localhost:8866/
[Voila] Found kernel python3 in /home/user/.virtualenvs/jupyterlab3/share/jupyter/kernel
[Voila] Found kernel jupyterlab3 in /home/user/.local/share/jupyter/kernels
[Voila] Found kernel test in /home/user/.local/share/jupyter/kernels
[Voila] Found kernel dev in /home/user/.local/share/jupyter/kernels
[Voila] Found kernel jupyterlab in /home/user/.local/share/jupyter/kernels
[Voila] Found kernel jupyterlab2 in /home/user/.local/share/jupyter/kernels
[Voila] Instantiating kernel 'jupyterlab' with kernel provisioner: local-provisioner
[Voila] Starting kernel: ['/home/user/.virtualenvs/jupyterlab/bin/python', '-m', 'ipykernel_launcher', '-f', '/tmp/voila_bj7m787e/kernel-eb48a2bb-76ed-47b3-9f53-6181abd3857e.json']
[Voila] Connecting to: tcp://127.0.0.1:56117
[Voila] Connecting to: tcp://127.0.0.1:44209
[Voila] Kernel started: eb48a2bb-76ed-47b3-9f53-6181abd3857e
[Voila] Kernel args: {'kernel_name': 'jupyterlab', 'env': {'SHELL': '/bin/bash', 'WSL_DISTRO_NAME': 'Ubuntu-20.04', 'WT_SESSION': 'e305ec09-339c-4e97-bfa7-b4877f1e8e3b', 'LOGNAME': 'user', 'MANPATH': '/home/linuxbrew/.linuxbrew/share/man:', 'VIRTUALENVWRAPPER_VIRTUALENV': '/home/user/.local/bin/virtualenv', 'VIRTUALENVWRAPPER_SCRIPT': '/home/user/.local/bin/virtualenvwrapper.sh', 'HOME': '/home/user', 'LANG': 'C.UTF-8', 'WSL_INTEROP': '/run/WSL/224_interop', 'LS_COLORS': 'rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:.tar=01;31:.tgz=01;31:.arc=01;31:.arj=01;31:.taz=01;31:.lha=01;31:.lz4=01;31:.lzh=01;31:.lzma=01;31:.tlz=01;31:.txz=01;31:.tzo=01;31:.t7z=01;31:.zip=01;31:.z=01;31:.dz=01;31:.gz=01;31:.lrz=01;31:.lz=01;31:.lzo=01;31:.xz=01;31:.zst=01;31:.tzst=01;31:.bz2=01;31:.bz=01;31:.tbz=01;31:.tbz2=01;31:.tz=01;31:.deb=01;31:.rpm=01;31:.jar=01;31:.war=01;31:.ear=01;31:.sar=01;31:.rar=01;31:.alz=01;31:.ace=01;31:.zoo=01;31:.cpio=01;31:.7z=01;31:.rz=01;31:.cab=01;31:.wim=01;31:.swm=01;31:.dwm=01;31:.esd=01;31:.jpg=01;35:.jpeg=01;35:.mjpg=01;35:.mjpeg=01;35:.gif=01;35:.bmp=01;35:.pbm=01;35:.pgm=01;35:.ppm=01;35:.tga=01;35:.xbm=01;35:.xpm=01;35:.tif=01;35:.tiff=01;35:.png=01;35:.svg=01;35:.svgz=01;35:.mng=01;35:.pcx=01;35:.mov=01;35:.mpg=01;35:.mpeg=01;35:.m2v=01;35:.mkv=01;35:.webm=01;35:.ogm=01;35:.mp4=01;35:.m4v=01;35:.mp4v=01;35:.vob=01;35:.qt=01;35:.nuv=01;35:.wmv=01;35:.asf=01;35:.rm=01;35:.rmvb=01;35:.flc=01;35:.avi=01;35:.fli=01;35:.flv=01;35:.gl=01;35:.dl=01;35:.xcf=01;35:.xwd=01;35:.yuv=01;35:.cgm=01;35:.emf=01;35:.ogv=01;35:.ogx=01;35:.aac=00;36:.au=00;36:.flac=00;36:.m4a=00;36:.mid=00;36:.midi=00;36:.mka=00;36:.mp3=00;36:.mpc=00;36:.ogg=00;36:.ra=00;36:.wav=00;36:.oga=00;36:.opus=00;36:.spx=00;36:.xspf=00;36:', 'VIRTUAL_ENV': '/home/user/.virtualenvs/jupyterlab3',, 'VIRTUALENVWRAPPER_WORKON_CD': '1', , 'VIRTUALENVWRAPPER_PYTHON': '/usr/bin/python3', 'INFOPATH': '/home/linuxbrew/.linuxbrew/share/info:', 'WORKON_HOME': '/home/user/.virtualenvs', 'LESSCLOSE': '/usr/bin/lesspipe %s %s', 'TERM': 'xterm-256color', 'LESSOPEN': '| /usr/bin/lesspipe %s', 'USER': 'user', 'HOMEBREW_CELLAR': '/home/linuxbrew/.linuxbrew/Cellar', 'VIRTUALENVWRAPPER_PROJECT_FILENAME': '.project', 'SHLVL': '1', , 'HOMEBREW_REPOSITORY': '/home/linuxbrew/.linuxbrew/Homebrew', 'PS1': '(jupyterlab3) \[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ ', 'WSLENV': 'WT_SESSION::WT_PROFILE_ID', 'XDG_DATA_DIRS': '/usr/local/share:/usr/share:/var/lib/snapd/desktop', 'BROWSER': '/mnt/c/Program Files/Mozilla Firefox/firefox.exe', 'PATH': '/home/user/.virtualenvs/jupyterlab3/bin:/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin:/home/user/.local/bin:/home/user/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/wsl/lib:/mnt/c/Windows/System32:/mnt/c/Program Files/remoteit/resources/x64:/mnt/c/Program Files/Docker/Docker/resources/bin:/mnt/c/ProgramData/DockerDesktop/version-bin:/mnt/c/Program Files/PowerShell/7/:/mnt/c/Users/user/AppData/Local/Microsoft/WindowsApps:/mnt/c/Users/user/go/bin:/mnt/c/Users/user/AppData/Local/Programs/IPFS Desktop/resources/app.asar.unpacked/src/ipfs-on-path/scripts/bin-win:/mnt/c/Program Files/7-Zip:/mnt/c/WINDOWS/System32/WindowsPowerShell/v1.0:/mnt/c/Users/user/AppData/Local/Programs/Microsoft VS Code/bin:/snap/bin', 'VIRTUALENVWRAPPER_HOOK_DIR': '/home/user/.virtualenvs', , 'HOSTTYPE': 'x86_64', 'WT_PROFILE_ID': '**', 'OLDPWD': ******, '_': '/home/user/.virtualenvs/jupyterlab3/bin/voila', <ENV_VARIABLE.SCRIPT_NAME: 'SCRIPT_NAME'>: '/', <ENV_VARIABLE.PATH_INFO: 'PATH_INFO'>: '', <ENV_VARIABLE.QUERY_STRING: 'QUERY_STRING'>: '', <ENV_VARIABLE.SERVER_SOFTWARE: 'SERVER_SOFTWARE'>: 'voila/0.4.0', <ENV_VARIABLE.SERVER_PROTOCOL: 'SERVER_PROTOCOL'>: 'HTTP/1.1', <ENV_VARIABLE.SERVER_PORT: 'SERVER_PORT'>: '8866', <ENV_VARIABLE.SERVER_NAME: 'SERVER_NAME'>: 'localhost', <ENV_VARIABLE.VOILA_PREHEAT: 'VOILA_PREHEAT'>: 'False', <ENV_VARIABLE.VOILA_BASE_URL: 'VOILA_BASE_URL'>: '/', <ENV_VARIABLE.VOILA_SERVER_URL: 'VOILA_SERVER_URL'>: '/'}, 'cwd': ''}
[Voila] Template paths:
/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates/lab
/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates/lab
/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates/base
/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates/base
/home/user/.virtualenvs/jupyterlab3/share/jupyter
/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates
/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates
/home/user/.local/share/jupyter
/home/user/.local/share/jupyter/voila/templates
/home/user/.local/share/jupyter/nbconvert/templates
/usr/local/share/jupyter
/usr/local/share/jupyter/voila/templates
/usr/local/share/jupyter/nbconvert/templates
/usr/share/jupyter
/usr/share/jupyter/voila/templates
/usr/share/jupyter/nbconvert/templates
[Voila] Applying preprocessor: TagRemovePreprocessor
[Voila] Applying preprocessor: RegexRemovePreprocessor
[Voila] Applying preprocessor: coalesce_streams
[Voila] Applying preprocessor: HighlightMagicsPreprocessor
[Voila] Applying preprocessor: CSSHTMLHeaderPreprocessor
[Voila] Attempting to load template index.html.j2
[Voila] template_paths: /home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates/lab:/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates/lab:/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates/base:/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates/base:/home/user/.virtualenvs/jupyterlab3/share/jupyter:/home/user/.virtualenvs/jupyterlab3/share/jupyter/voila/templates:/home/user/.virtualenvs/jupyterlab3/share/jupyter/nbconvert/templates:/home/user/.local/share/jupyter:/home/user/.local/share/jupyter/voila/templates:/home/user/.local/share/jupyter/nbconvert/templates:/usr/local/share/jupyter:/usr/local/share/jupyter/voila/templates:/usr/local/share/jupyter/nbconvert/templates:/usr/share/jupyter:/usr/share/jupyter/voila/templates:/usr/share/jupyter/nbconvert/templates
[Voila] connecting iopub channel to tcp://127.0.0.1:44209
[Voila] Connecting to: tcp://127.0.0.1:44209
[Voila] connecting shell channel to tcp://127.0.0.1:51913
[Voila] Connecting to: tcp://127.0.0.1:51913
[Voila] connecting stdin channel to tcp://127.0.0.1:53451
[Voila] Connecting to: tcp://127.0.0.1:53451
[Voila] connecting heartbeat channel to tcp://127.0.0.1:59341
[Voila] connecting control channel to tcp://127.0.0.1:56117
[Voila] Connecting to: tcp://127.0.0.1:56117
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: stream
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (starting)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] Executing cell:
from ipywidgets import Button
Button(description="button 1")
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: execute_input
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] msg_type: status
[Voila] content: {'execution_state': 'busy'}
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: execute_input
[Voila] msg_type: execute_input
[Voila] content: {'code': 'from ipywidgets import Button\nButton(description="button 1")', 'execution_count': 1}
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: comm_open
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: comm_open
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: comm_open
[Voila] msg_type: comm_open
[Voila] content: {'data': {'state': {'_model_module': '@jupyter-widgets/base', '_model_module_version': '1.2.0', '_model_name': 'LayoutModel', '_view_count': None, '_view_module': '@jupyter-widgets/base', '_view_module_version': '1.2.0', '_view_name': 'LayoutView', 'align_content': None, 'align_items': None, 'align_self': None, 'border': None, 'bottom': None, 'display': None, 'flex': None, 'flex_flow': None, 'grid_area': None, 'grid_auto_columns': None, 'grid_auto_flow': None, 'grid_auto_rows': None, 'grid_column': None, 'grid_gap': None, 'grid_row': None, 'grid_template_areas': None, 'grid_template_columns': None, 'grid_template_rows': None, 'height': None, 'justify_content': None, 'justify_items': None, 'left': None, 'margin': None, 'max_height': None, 'max_width': None, 'min_height': None, 'min_width': None, 'object_fit': None, 'object_position': None, 'order': None, 'overflow': None, 'overflow_x': None, 'overflow_y': None, 'padding': None, 'right': None, 'top': None, 'visibility': None, 'width': None}, 'buffer_paths': []}, 'comm_id': '37632a44b6ff4351ad597e9d63b621c1', 'target_name': 'jupyter.widget', 'target_module': None}
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: display_data
[Voila] msg_type: comm_open
[Voila] content: {'data': {'state': {'_model_module': '@jupyter-widgets/controls', '_model_module_version': '1.5.0', '_model_name': 'ButtonStyleModel', '_view_count': None, '_view_module': '@jupyter-widgets/base', '_view_module_version': '1.2.0', '_view_name': 'StyleView', 'button_color': None, 'font_weight': ''}, 'buffer_paths': []}, 'comm_id': '31c8687822a24ee6b4ce7a76d7249f54', 'target_name': 'jupyter.widget', 'target_module': None}
[Voila] msg_type: comm_open
[Voila] content: {'data': {'state': {'_dom_classes': [], '_model_module': '@jupyter-widgets/controls', '_model_module_version': '1.5.0', '_model_name': 'ButtonModel', '_view_count': None, '_view_module': '@jupyter-widgets/controls', '_view_module_version': '1.5.0', '_view_name': 'ButtonView', 'button_style': '', 'description': 'button 1', 'disabled': False, 'icon': '', 'layout': 'IPY_MODEL_37632a44b6ff4351ad597e9d63b621c1', 'style': 'IPY_MODEL_31c8687822a24ee6b4ce7a76d7249f54', 'tooltip': ''}, 'buffer_paths': []}, 'comm_id': '7fb88a2931c14431b0b56a16e5582c90', 'target_name': 'jupyter.widget', 'target_module': None}
[Voila] msg_type: display_data
[Voila] content: {'data': {'text/plain': "Button(description='button 1', style=ButtonStyle())", 'application/vnd.jupyter.widget-view+json': {'version_major': 2, 'version_minor': 0, 'model_id': '7fb88a2931c14431b0b56a16e5582c90'}}, 'metadata': {}, 'transient': {}}
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] msg_type: status
[Voila] content: {'execution_state': 'idle'}
[Voila] Skipping non-executing cell 1
/home/user/.virtualenvs/jupyterlab3/lib/python3.8/site-packages/jupyter_server/base/handlers.py:197: UserWarning: The Tornado web application does not have an 'authorizer' defined in its settings. In future releases of jupyter_server, this will be a required key for all subclasses of JupyterHandler
. For an example, see the jupyter_server source code for how to add an authorizer to the tornado settings: https://github.com/jupyter-server/jupyter_server/blob/653740cbad7ce0c8a8752ce83e4d3c2c754b13cb/jupyter_server/serverapp.py#L234-L256
warnings.warn(
[Voila] Initializing websocket connection /api/kernels/eb48a2bb-76ed-47b3-9f53-6181abd3857e/channels
[Voila] Requesting kernel info from eb48a2bb-76ed-47b3-9f53-6181abd3857e
[Voila] Connecting to: tcp://127.0.0.1:51913
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] Received kernel info: {'status': 'ok', 'protocol_version': '5.3', 'implementation': 'ipython', 'implementation_version': '8.4.0', 'language_info': {'name': 'python', 'version': '3.8.10', 'mimetype': 'text/x-python', 'codemirror_mode': {'name': 'ipython', 'version': 3}, 'pygments_lexer': 'ipython3', 'nbconvert_exporter': 'python', 'file_extension': '.py'}, 'banner': "Python 3.8.10 (default, Jun 22 2022, 20:18:18) \nType 'copyright', 'credits' or 'license' for more information\nIPython 8.4.0 -- An enhanced Interactive Python. Type '?' for help.\n", 'help_links': [{'text': 'Python Reference', 'url': 'https://docs.python.org/3.8'}, {'text': 'IPython Reference', 'url': 'https://ipython.org/documentation.html'}, {'text': 'NumPy Reference', 'url': 'https://docs.scipy.org/doc/numpy/reference/'}, {'text': 'SciPy Reference', 'url': 'https://docs.scipy.org/doc/scipy/reference/'}, {'text': 'Matplotlib Reference', 'url': 'https://matplotlib.org/contents.html'}, {'text': 'SymPy Reference', 'url': 'http://docs.sympy.org/latest/index.html'}, {'text': 'pandas Reference', 'url': 'https://pandas.pydata.org/pandas-docs/stable/'}]}
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] Opening websocket /api/kernels/eb48a2bb-76ed-47b3-9f53-6181abd3857e/channels
[Voila] Getting buffer for eb48a2bb-76ed-47b3-9f53-6181abd3857e
[Voila] Connecting to: tcp://127.0.0.1:44209
[Voila] Connecting to: tcp://127.0.0.1:51913
[Voila] Connecting to: tcp://127.0.0.1:56117
[Voila] Connecting to: tcp://127.0.0.1:53451
[Voila] Connecting to: tcp://127.0.0.1:51913
[Voila] Connecting to: tcp://127.0.0.1:56117
[Voila] Nudge: attempt 1 on kernel eb48a2bb-76ed-47b3-9f53-6181abd3857e
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] Nudge: IOPub received: eb48a2bb-76ed-47b3-9f53-6181abd3857e
[Voila] Nudge: resolving iopub future: eb48a2bb-76ed-47b3-9f53-6181abd3857e
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] Nudge: shell info reply received: eb48a2bb-76ed-47b3-9f53-6181abd3857e
[Voila] Nudge: resolving shell future: eb48a2bb-76ed-47b3-9f53-6181abd3857e
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: comm_msg
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (busy)
[Voila] activity on eb48a2bb-76ed-47b3-9f53-6181abd3857e: status (idle)
</details>
<details><summary>Browser Output</summary>
<pre>
Paste the output from your browser Javascript console here.
</pre>
![image](https://user-images.githubusercontent.com/1043822/206129135-4111dd79-8721-4d79-a9fa-fdafb7a88ff5.png)
</details>
### If using JupyterLab
- JupyterLab version: 3.5.1
<details><summary>Installed Labextensions</summary>
<pre>
Paste the output from your command line running `jupyter labextension list`.
</pre>```
JupyterLab v3.5.1
/home/user/.virtualenvs/jupyterlab3/share/jupyter/labextensions
jupyterlab_pygments v0.2.2 enabled OK (python, jupyterlab_pygments)
@jupyter-widgets/jupyterlab-manager v3.1.1 enabled OK (python, jupyterlab_widgets)
@voila-dashboards/jupyterlab-preview v2.2.0 enabled OK (python, voila)
bug