gemini-3-pro-image-preview Base64 decoding failed error: 6 major causes and complete repair guide
Author's Note: Getting a "Base64 decoding failed 400" error when calling gemini-3-pro-image-preview? This guide breaks down the 6 most common causes, provides correct implementation examples in Python, JavaScript, and cURL, and gives you a 5-step troubleshooting plan. Are you running into this 400 error when calling the gemini-3-pro-image-preview API? { "status_code": 400, "error": { "message":…
