When Gemini Deep Research Returns Shallow Reports or Gets Stuck — A Practical Troubleshooting Guide
Why Gemini Deep Research sometimes produces thin reports or fails midway, and how to fix it through plan editing, source distribution, and PDF citation tuning.
Why Your Gemini File URI Suddenly Returns 404 — Designing Around the 48-Hour TTL
Your Gemini-powered image or video pipeline worked perfectly yesterday, then started returning 404 the morning after a restart. The culprit is the File API's 48-hour TTL. Here is how to detect it and design an app that survives it.
When Gemini API Returns Mojibake: 4 Places to Check First
Mojibake in Gemini API responses almost never comes from the API itself — it lives in your client code. Walk through the four layers (HTTP decoding, streaming chunks, output encoding, surrogate pairs) where the corruption hides.
Gemini API Multi-Turn Chat Breaking: Chat History Management Pitfalls and Fixes
When building multi-turn conversations with the Gemini API, longer chats cause token overflow, slowdowns, and context loss. Learn how to use ChatSession correctly with practical code examples for managing chat history.
Gemini API Returns Markdown — How to Get Plain Text Responses
Gemini API responses often contain Markdown symbols like **, ##, and -. Learn how to get clean plain text using response_mime_type, System Instructions, and post-processing with practical Python and TypeScript code examples.
Gemini API System Instructions Not Working — 4 Common Causes and How to Fix Them
Set up System Instructions but the model keeps ignoring them? This guide covers the 4 most common reasons why system prompts fail in Gemini API — from wrong parameter placement to multi-turn drift — with working code examples.
When Gemini Gems Ignore Your Instructions or Refuse to Save
Gemini Gems ignoring your custom instructions, failing to save, or resetting mid-conversation? This guide covers all 7 common issues with specific causes and fixes, plus a practical template for building Gems that actually work.
Veo API Not Working? Common Errors and How to Fix Them
Troubleshoot common Veo API errors including polling implementation mistakes, safety filter rejections, quota exceeded, and video file download failures. With working Python code examples.
Fixing Gemini API 'Model Not Found' Errors: A Complete 2026 Guide
Getting a 'model not found' or INVALID_ARGUMENT error in the Gemini API? This guide explains every cause and fix, including correct model names for 2026 and how to use generativelanguage.googleapis.com properly.
How to Fix Gemini API JSON and Structured Output Errors
Troubleshoot Gemini API JSON Mode and Structured Output errors including malformed JSON, schema violations, and truncated responses with step-by-step solutions and code examples.
Gemini API Practical Troubleshooting Guide — Master 2.5 Pro Rate Limits, Timeouts & Errors
Systematically troubleshoot Gemini 2.5 Pro API errors: 429 rate limits, 504 timeouts, 400 validation errors, and Safety Filter blocks. Learn production-ready solutions with retry strategies, streaming optimization, and cost-saving techniques.
Gemini 2.5 Pro API: Complete Production Troubleshooting & Optimization Guide
Master Gemini 2.5 Pro API for production. Complete error code reference, model configuration, streaming patterns, cost optimization, and load balancing strategies for stable, scalable deployments at generativelanguage.googleapis.com.