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[Docs] Explain Vertex Gemini 3.7 model-turn errors - #31

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[Docs] Explain Vertex Gemini 3.7 model-turn errors#31
zoomote[bot] wants to merge 1 commit into
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@zoomote zoomote Bot commented Aug 15, 2026

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​Opened on behalf of @taltas. Follow up by mentioning @roomote, in the web UI, or in Discord.

What changed

Add troubleshooting guidance to the Vertex AI provider page for Gemini 3.7's Requests ending with a model turn are not supported error, including its empty-tool-response trigger and upgrade resolution.

Why this change was made

Gemini 3.7 validates conversation turns more strictly than earlier models. Users encountering the HTTP 400 error need a direct explanation of the affected older Zoo Code behavior and the supported resolution.

Impact

Vertex Gemini 3.7 users can identify this request-shape failure and know to update Zoo Code to a version that preserves empty tool responses.

Screenshots

Vertex AI documentation explains the Gemini 3.7 model-turn error and resolution

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