AI by Zapier action Fails with 500 error when a Knowlledge source is added

Update timeline

1. investigating Apr 24, 2026, 07:31 PM UTC

   We are investigating an error related to AI by Zapier when adding a knowledge source. If you are experiencing this issue, you can connect with our support team here: https://zapier.com/app/get-help

2. resolved Apr 25, 2026, 03:58 AM UTC

   The issue causing some AI by Zapier steps to fail with a 500 error when adding a knowledge source has been resolved. If you were affected by this issue, your Zaps with AI by Zapier steps using knowledge sources will now work again. To restore functionality: 1. Open the affected Zap and navigate to the AI by Zapier step 2. Before deleting the step, we recommend copying and saving your prompt to avoid losing any work. 3. Delete the step 4. Re-add the AI by Zapier step 5. Copy your previous prompt into the new step 6. Re-upload your knowledge sources Once you've completed these steps, your Zap will be ready to use. If you are experiencing this issue, you can connect with our support team here: https://zapier.com/app/get-help.