Table of Contents extension is missing from the JupyterLab extension list
Written by
Updated at December 17, 2025
Issue description
The JupyterLab extension folder of your DataSphere project running in serverless mode does not contain the Table of Contents extension. This extension facilitates navigation inside the project files using headers.
Solution
If you use DataSphere in serverless mode, JupyterLab 3.0 and higher is not available yet. Opt for the dedicated mode that supports JupyterLab 3.5.3.
Check new DataSphere releases on the release notes page.