n8n errors / Config
PayloadTooLargeError: request entity too large
Cause
The incoming webhook payload exceeds n8n's configured body size limit, so the HTTP layer rejects it before the workflow runs.
Fix
Set N8N_PAYLOAD_SIZE_MAX to a higher value in MB (e.g. 64) and restart. For large binary uploads also set N8N_DEFAULT_BINARY_DATA_MODE=filesystem. Behind nginx, raise client_max_body_size too. In Docker, add the env var to compose.
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