Server Error: Invalid Request URL

Lewis
New Contributor II

‎04-29-2026 02:27 AM

Hello,
Had this pop up a few times this week when trying to run notebooks from within another notebook. It has been quite inconsistent, as some of the referenced notebooks will work but then for one this will pop up (and the one that doesn't work varies). Reloading the page doesn't resolve the issue, so not completely sure what is going on.


Lewis_0-1777454480192.png

Wondering if anyone had any idea of the cause please?

Thanks,

Lewis

0 Kudos

balajij8
Contributor III

‎04-29-2026 03:31 AM

You can follow below

  • Absolute Path - Ensure the path is absolute if you are using Databricks notebook run (/Workspace/Files/Notebook). Don't rely on relative paths. Avoid dynamically constructed paths that may add additional characters triggering Invalid Request URL error.
  • Cluster state - Long running clusters sometimes cache invalid routing info. Restart the cluster & try it again.
  • Code Practices - Replace chained notebook calls with modular functions & use serverless workflows instead of nested notebook execution.

View solution in original post

Lewis
New Contributor II

‎04-29-2026 09:56 AM

Thank you 🙂