WEBVTT

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This independent n8n demo shows a real workflow failure and a verified fix, using synthetic orders.

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The broken workflow assumes that every payload contains a nested customer email.

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So missing data causes an HTTP 500 error.

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The fix adds safe field access, email validation, item validation, and explicit rejection responses.

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With the same malformed input, the corrected workflow returns HTTP 200 and explains that the email is invalid.

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A second test processes two valid line items

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and calculates a total of 211 euro.

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The failed execution and both successful fixed executions are retained as evidence.

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Send your error and a sanitized workflow export,

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and I will confirm the likely scope before you order.