n8n
How to Fix n8n Telegram Trigger Not Working: A 6-Step Diagnostic Checklist
Fix the n8n Telegram Trigger not firing: diagnose with getWebhookInfo, re-register the webhook, then check test URLs, privacy mode, and N8N_WEBHOOK_URL.
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How to Migrate n8n from SQLite to PostgreSQL Without Losing Workflows
Migrate n8n from SQLite to PostgreSQL with the CLI: export entities, provision Postgres, repoint n8n via DB_POSTGRESDB_* variables, import, and verify.
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How to Run n8n Code Nodes with External Task Runners in Docker
n8n 3.0 deprecated internal task runners. Set up external mode in Docker: the n8nio/runners sidecar compose file, auth token wiring, and Python allowlists.
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How to Fix n8n 429 Rate Limit Errors with Staggered Schedule Triggers
Stop n8n 429 rate limit errors by staggering Schedule Triggers off the hour, adding jitter, and treating 429 as an expected retry, not a crash.
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Ni8mare (CVE-2026-21858): Patch n8n's CVSS 10.0 Webhook RCE and Rotate Your Credentials
Patch Ni8mare (CVE-2026-21858): upgrade self-hosted n8n to 1.121.0+ to fix the CVSS 10.0 webhook RCE, verify the fix, and rotate all exposed credentials.
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n8n Retry On Fail and Paid APIs: Stop Double Charges with Idempotency Keys
n8n Retry On Fail re-sends failed HTTP calls. Learn how stable idempotency keys and a Postgres checkpoint table stop paid APIs from charging twice.
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n8n AI Agent WhatsApp Channel Tutorial: Build a WhatsApp Chatbot Powered by an n8n AI Agent
Learn to connect a WhatsApp Business number to an n8n AI agent via the WhatsApp Cloud API: Meta app setup, webhook verification, chat memory, and live replies.
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n8n October 2026 Security Bulletin: Patch Guide for Self-Hosted Instances
n8n's October 14, 2026 security bulletin ships High-severity fixes. This guide maps each release line to its patch version and walks through a safe upgrade.
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How to Fix n8n AI Agent Not Calling Tools: 4 Proven Fixes
Fix an n8n agent that ignores its tools: rewrite tool descriptions, add $fromAI() params, enable Force Tool Call on First Iteration, and use a capable model.
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Fix n8n 'Connection Lost' Behind NGINX: WebSocket and Reverse Proxy Guide
Fix the n8n 'Connection lost' banner behind NGINX or Caddy: WebSocket upgrade passthrough, proxy buffering, N8N_PROXY_HOPS, and how to rule out memory crashes.