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Vertex AI search and loading issue

Hello,

I am currently trying to deploy an RAG from Google Cloud with Vertex AI Search. The final goal is to be able to query a chatbot about notices and have it respond based on the data I have uploaded to a bucket : 

Capture d'écran 2025-07-07 084348.png

Capture d'écran 2025-07-07 084429.png

I have successfully placed my data in a bucket and linked the bucket to my application. The data has been imported and processed correctly.

However, when I test a response via "preview" (before setting up the chatbot), a message appears : 

Capture d'écran 2025-07-07 084515.png

Does anyone have any ideas, please?

Thank you in advance.

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1 REPLY 1

Hi Torpion29,

Welcome to the Google Cloud Community!

It looks like you are encountering a persistent “Problem loading results” error during the Preview phase in Vertex AI Search, even though your documents have been successfully imported into the datastore.

Here are the potential ways that might help with your use case:

  • Check IAM Permissions: Double-check that you and your service accounts have the necessary roles assigned for Discovery Engine or Vertex AI Search to function properly.
  • Check Cloud Logging: Try checking Cloud Logging in your Google Cloud Console to pinpoint the issue. Filter logs using Discovery Engine or Retail as the resource type, target ‘discoveryengine.googleapis.com/search’, and focus on entries with ‘ERROR’ or ‘WARNING’ severity. Set the time window to when your Preview search failed, and search for your datastore ID or application ID; those details can reveal whether the problem is due to permissions, indexing, or other internal errors.
  • Verify PDF Content: Make sure your PDFs include real, selectable text rather than just scanned images or unrecognized characters.
  • Try again: Try refreshing your page, switching your browser to Incognito mode, or waiting a few minutes before you try again.
  • Test with a common word: Try checking if you or your setup can load any results—even if they’re not relevant at first.

Was this helpful? If so, please accept this answer as “Solution”. If you need additional assistance, reply here within 2 business days and I’ll be happy to help.