Analyzing the 3 Major Reasons for Nano Banana Pro Watermark Removal Failure: Complete Troubleshooting Guide for MALFORMED_FUNCTION_CALL Error
When using Nano Banana Pro (Gemini 3 Pro Image) for image editing, you might run into a confusing error if you include "remove watermark" instructions in your prompt—the API returns MALFORMED_FUNCTION_CALL with parts: null. This isn't a technical bug; it's Google's carefully designed safety mechanism at work. Core Value: After reading this, you'll understand why…
