Fix n8n "Task execution timed out after 300 seconds" Code node freeze
Attaching memory to your LLM deadlocks the task runner on AI Agent sub-node types. Feed Code nodes through the main data path and the freeze clears.
Topic
How To
Tactical how-to / step-by-step / troubleshooting
Fix the n8n Google Ads node 400 "invalid argument" error
Google retired Ads API v21 and n8n's node kept calling it. The exact 400 payload, the v25 field gotcha, and both fix paths in one guide.
How to Add Google's Preferred Sources Button to Your Site
Google's new interactive preferred sources button ships as two lines of HTML. Where it goes, what the data-theme and data-lang attributes do, who qualifies, and what the preferred badge actually changes in Top Stories, AI Mode, and AI Overviews.
Make AccountValidationError at init: the watchdog fix
An init-time AccountValidationError disables a Make scenario before any module runs, so error handlers and exponential backoff never fire. Build a watchdog scenario that polls the Make API and re-enables it.
How to fix Make's Google Sheets "Add a Row" inserting above headers
Make's Google Sheets Add a Row inserts above the headers when the module's header lookup fails after a sheet-structure change. The fix: restore row 1, then re-select the worksheet.
Cloudflare AI bot policies can block ChatGPT and Perplexity citations
Cloudflare's Search and Agent presets catch OAI-SearchBot, PerplexityBot, and Perplexity-User. The fix, plus the September 15, 2026 defaults deadline, in one pass.
Cursor MCP server connection failed: 6 fixes for stdio and SSE errors
Cursor's MCP panel hides the real error behind "Client closed". Read MCP Logs, reproduce the command by hand, fix the config, restart Cursor.
Fix Cursor 401 Unauthorized User API Key on Overridden OpenAI Base URL
With Override OpenAI Base URL on, Cursor forwards the OpenAI API Key field's value to your endpoint; the 401 is that endpoint rejecting it. Fix the key pair, plus the two documented cases no key can fix.
How to Fix Cursor waitForProviderRegistration Timeout
Fix Cursor's waitForProviderRegistration timeout by locating the failing extension host, then repairing the remote server or desktop install with evidence.
How to Fix Cursor Extension Host Timeout (deadline_exceeded)
A code-specific fix for Cursor's ERROR_EXTENSION_HOST_TIMEOUT and deadline_exceeded message, with extension isolation, process checks, and repair steps.