Gemini Flash fails with “Requested entity was not found.”

Google Antigravity
,
1

Requests to Gemini Flash fail with the following error:

Trajectory ID: 64914f8c-9e18-4f1
Error: HTTP 404 Not Found
Sherlog:
TraceID: 0xa62af7
Headers: {“Alt-Svc”:\[“h3=":443"; ma=2592000,h3-29=":443"; ma=2592000”\],“Content-Length”:\[“114”\],“Content-Type”:\[“text/event-stream”\],“Date”:\[“Mon, 30 Mar 2026 20:13:01 GMT”\],“Server”:\[“ESF”\],“Server-Timing”:\[“gfet4t7; dur=1007”\],“Vary”:\[“Origin”,“X-Origin”,“Referer”\],“X-Cloudaicompanion-Trace-Id”:\[“a62af749e545e251”\],“X-Content-Type-Options”:\[“nosniff”\],“X-Frame-Options”:\[“SAMEORIGIN”\],“X-Xss-Protection”:\[“0”\]}

{
“error”: {
“code”: 404,
“message”: “Requested entity was not found.”,
“status”: “NOT_FOUND”
}
}

This makes the model not usable.

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