Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

Still getting "Model not found" error instead of static figure when saving and re-opening the notebook

Open
#473 16 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
jupyter-notebook, matplotlib

Research direction

Start by reproducing the save-and-reopen workflow in JupyterLab with the versions listed in the issue, then inspect the Chrome console output shown in the report. The issue is resolved when reopening the notebook renders the figure without the “Model not found” error.

Written by the indexing model from the issue text.

Description

Hi, unfortunately, I am still seeing this error after re-opening the notebook.
Screenshot at 2022-06-29 16-31-42

The console log from Chrome:
Screenshot at 2022-06-29 16-33-54

Versions:

jupyter_client            7.3.1              pyhd8ed1ab_0    conda-forge
jupyter_core              4.10.0           py39hf3d152e_0    conda-forge
jupyter_server            1.17.0             pyhd8ed1ab_0    conda-forge
jupyterlab                3.4.2              pyhd8ed1ab_0    conda-forge
jupyterlab_pygments       0.2.2              pyhd8ed1ab_0    conda-forge
jupyterlab_server         2.14.0             pyhd8ed1ab_0    conda-forge
jupyterlab_widgets        1.1.0              pyhd8ed1ab_0    conda-forge

matplotlib                3.5.2            py39hf3d152e_0    conda-forge
matplotlib-base           3.5.2            py39h700656a_0    conda-forge
matplotlib-inline         0.1.3              pyhd8ed1ab_0    conda-forge

ipydatawidgets            4.3.1.post1        pyhc268e32_0    conda-forge
ipykernel                 6.13.0           py39hef51801_0    conda-forge
ipympl                    0.9.1              pyhd8ed1ab_0    conda-forge
ipython                   8.4.0            py39hf3d152e_0    conda-forge
ipython_genutils          0.2.0                      py_1    conda-forge
ipywidgets                7.7.0              pyhd8ed1ab_0    conda-forge

Thanks for any help!

Originally posted by @nvaytet in https://github.com/matplotlib/ipympl/issues/343#issuecomment-1170066433

Dominant language
Jupyter Notebook
Stars
1.7k
Forks
234
PR merge metrics
No merged PRs in 30d

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from matplotlib/ipympl

All issues in matplotlib/ipympl

Similar issues

More Data Visualization issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.