# Code cells not rendering on Jupyter Lab

**URL:** <https://discourse.jupyter.org/t/code-cells-not-rendering-on-jupyter-lab/10597>\
**Category:** JupyterLab\
**Tags:** how-to, help-wanted\
**Created:** [September 1, 2021, 8:19pm UTC](https://discourse.jupyter.org/t/code-cells-not-rendering-on-jupyter-lab/10597 "2021-09-01T20:19:15Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![NgocDo22](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/ngocdo22/32/5109_2.png) [@NgocDo22](https://discourse.jupyter.org/u/NgocDo22)\
**Post date:** [September 1, 2021, 8:19pm UTC](https://discourse.jupyter.org/t/code-cells-not-rendering-on-jupyter-lab/10597/1 "2021-09-01T20:19:15Z")

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Hi everyone! When I launch Jupyter notebooks on Jupiter lab, code cells sometimes don’t render.

For example, I tried to work with [this notebook](https://github.com/davedgd/python-bootcamp/blob/adcdf541432bb75e3b72c5a6e69b6849475409fc/Unit%203/Python-Bootcamp-Unit3.ipynb)

When I open it on Github, all the cells display properly like this:

[![image](https://user-images.githubusercontent.com/74156238/131717955-8f05fea6-3120-4be9-b8b0-853fb6ff0b95.png)](https://user-images.githubusercontent.com/74156238/131717955-8f05fea6-3120-4be9-b8b0-853fb6ff0b95.png)

But in Jupyter lab, the cells under “Comparison Operator” section, for example, just won’t render:

[![image](https://user-images.githubusercontent.com/74156238/131718219-fb87b1e1-91ca-4f23-b5e3-b29491f511ff.png)](https://user-images.githubusercontent.com/74156238/131718219-fb87b1e1-91ca-4f23-b5e3-b29491f511ff.png)

Please advise if anyone has a solution here. Thanks!

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**Author:** ![jasongrout](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/jasongrout/32/371_2.png) [@jasongrout](https://discourse.jupyter.org/u/jasongrout)\
**Post date:** [September 1, 2021, 8:48pm UTC](https://discourse.jupyter.org/t/code-cells-not-rendering-on-jupyter-lab/10597/2 "2021-09-01T20:48:03Z")

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What version of JupyterLab are you using? If it is 3.1.x, can you try 3.1.10? There was a bug fixed in there that caused some rendering issues.

Edit: this is the PR I was thinking of: [Render placeholder at correct index by echarles · Pull Request #10898 · jupyterlab/jupyterlab · GitHub](https://github.com/jupyterlab/jupyterlab/pull/10898)

Release notes for 3.1.10: [Release v3.1.10 · jupyterlab/jupyterlab · GitHub](https://github.com/jupyterlab/jupyterlab/releases/tag/v3.1.10)

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<div class="post-metadata">

**Author:** ![NgocDo22](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/ngocdo22/32/5109_2.png) [@NgocDo22](https://discourse.jupyter.org/u/NgocDo22)\
**Post date:** [September 1, 2021, 9:45pm UTC](https://discourse.jupyter.org/t/code-cells-not-rendering-on-jupyter-lab/10597/3 "2021-09-01T21:45:36Z")

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Thanks @jasongrout! I tried JupyterLab 3.1.10 and it works.

@ [davedgd](https://github.com/davedgd) FYI - I could see all the code cells now. Thank you!