n8n AI Agent Nodes Break After Google's Gemini Interactions API Migration: How to Fix It
Why n8n's Gemini and LangChain AI Agent nodes stopped returning usable responses, and the Code-node workaround while the official fix is still pending.
Topic
n8n
n8n automation platform
Fix n8n Chat UI output_text Error on Message Two
Fix the n8n Chat UI error that appears on the second message with a self-hosted LLM.
How to fix n8n HTTP Request Bearer auth 401 with pagination
n8n's HTTP Request node silently swaps a working Bearer token for the literal string "hidden" once pagination is enabled, causing every paginated request to fail with 401. Here's the exact workaround.
How to Fix n8n AI Agent Tool Calls Not Saved in the Memory Node
n8n's AI Agent never writes the tool_calls array to Memory, so the model imitates a fake history and stops calling tools. Here are the two fixes that work today.
How to set up Entra Service Principal auth for n8n Microsoft nodes
Run n8n's Microsoft nodes unattended: the full Entra app registration and Service Principal credential setup for n8n 2.30, plus the node behaviour change to plan for.
Fix the n8n DeepSeek reasoning_content 400 Error
The DeepSeek AI Agent 400 is a field n8n drops between turns - here are three confirmed workarounds while issue #29119 stays open.
Fix n8n MCP AI Agent OAuth2 Silent Tool Failure
The AI Agent says it used no tools and the run shows success - the real cause is an OAuth2 token n8n never refreshes in an MCP context.
Fix n8n's MCP Webhook Heap Leak in Queue Mode
Why memory climbs to an OOM crash on n8n workers running an MCP Trigger in queue mode, and the exact version that fixes the SessionManager leak.
Self-hosting n8n with Docker Compose in 2026: complete walkthrough
Run n8n on your own server with Docker Compose and Traefik: compose.yaml, .env, WEBHOOK_URL, and N8N_PROXY_HOPS=1 — the setting most guides skip.
How to throw a custom error in an n8n Code node inside a loop
Two patterns for collecting per-item errors in n8n loops without halting the workflow - including the silent colon-truncation bug in Continue mode.