n8n Workflow Failing Silently? Add a Stop and Error Node

Some failures don't throw a visible error — a workflow just quietly stops partway through, and figuring out where it takes real digging through execution logs.

The fix:

add explicit "Stop and Error" nodes at key checkpoints with a clear custom error message. When something goes wrong, you get a specific, readable reason instead of an unexplained dead end in the execution history.