topic Re: Server Error: Invalid Request URL in Data Engineering

Server Error: Invalid Request URL

Lewis — Wed, 29 Apr 2026 09:27:37 GMT

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.

Wondering if anyone had any idea of the cause please?

Thanks,

Lewis

Re: Server Error: Invalid Request URL

balajij8 — Wed, 29 Apr 2026 10:31:08 GMT

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.