Request contains an invalid argument #18903

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│ CLI Version                              0.28.2                                                                      │
│ Git Commit                               da5e47ae3                                                                   │
│ Model                                    auto-gemini-2.5                                                             │
│ Sandbox                                  no sandbox                                                                  │
│ OS                                       win32                                                                       │
│ Auth Method                              Logged in with Google (@gmail.com)                                   │
│ GCP Project                              400573663629

[API Error: [{
"error": {
"code": 400,
"message": "Request contains an invalid argument.",
"errors": [
{
"message": "Request contains an invalid argument.",
"domain": "global",
"reason": "badRequest"
}
],
"status": "INVALID_ARGUMENT"
}
}
]]

'content-type': 'application/json; charset=UTF-8', │
│ date: 'Thu, 12 Feb 2026 13:11:08 GMT', │
│ server: 'ESF', │
│ 'server-timing': 'gfet4t7; dur=124', │
│ vary: 'Origin, X-Origin, Referer', │
│ 'x-cloudaicompanion-trace-id': '765d4adeb6c23e57', │
│ 'x-content-type-options': 'nosniff', │
│ 'x-frame-options': 'SAMEORIGIN', │
│ 'x-xss-protection': '0' │
│ }, │
│ status: 400, │
│ statusText: 'Bad Request', │
│ request: { │
│ responseURL: 'https://cloudcode-pa.googleapis.com/v1internal:streamGenerateContent?alt=sse' │
│ } │
│ }, │
│ error: undefined, │
│ status: 400, │
│ Symbol(gaxios-gaxios-error): '6.7.1'