Error AtlasError Documentation and Resolution

GitHub Actions workflow failed because a special pattern was not quoted

Invalid - creates a parse error that prevents your workflow from running.

GitHub Actions could not parse the workflow because a branch, tag, or path pattern beginning with special YAML characters was left unquoted.

Invalid - creates a parse error that prevents your workflow from runningconfiguration
Invalid - creates a parse error that prevents your workflow from running.
  • A branch, tag, or path pattern starts with a special YAML character and was not quoted.
  • A flow sequence contains a pattern with square brackets but the value is unquoted.
  • The workflow mixes glob-style patterns with raw YAML in a way that breaks parsing.
  1. Quote branch, tag, and path patterns that begin with special YAML characters.
  2. Use quoted strings for patterns containing brackets inside flow sequences.
  3. Revalidate the workflow YAML after updating filter syntax.
GitHub Docs: Workflow syntax for GitHub Actions
GitHub Actions special pattern parse error: causes and fixes | Error Atlas