404 NOT_FOUND

### Description of the bug:

When calling the Gemini API (models/gemini-2.0-flash-exp-image-generation) from a server environment, a 404 NOT_FOUND error is returned. However, the same API call works successfully when executed from a local environment, generating the expected content without errors.

{
"isSuccess": false,
"error": "404 NOT_FOUND. {'error': {'code': 404, 'message': 'models\/gemini-2.0-flash-exp-image-generation is not found for API version v1beta, or is not supported for generateContent. Call ListModels to see the list of available models and their supported methods.', 'status': 'NOT_FOUND'}}"
}

### Actual vs expected behavior:

_No response_

### Any other information you'd like to share?

_No response_