Invalid YAML


`type`	`https://docs.frem.sh/reference/api/errors/invalid-yaml`
HTTP status	`400` Bad Request

What it means

A SAST rule’s source is not YAML that parses. Duplicate keys, anchors and aliases are refused.

Example detail messages returned with this error:

Fix the YAML. detail gives the parser’s first message.

All fremforge API errors are RFC 9457 problem+json:

{
  "type": "https://docs.frem.sh/reference/api/errors/invalid-yaml",
  "title": "Bad Request",
  "status": 400,
  "detail": "..."
}

Branch on type, not on title or detail - those are human-readable and may be reworded.