This rule belongs to the
yaml-semantic-validation ruleset and states that:
If a YAML document begins with a %YAML directive, it must be followed in the next line by three dashes
--- and no other content in it. In other words, the %YAML directive must be valid and separated correctly from the remaining YAML content.
|Message||Did not find expected <document start>.|
- Looks like you missed the line separator '---' after use of a directive.
- Use only three dashes '---' as the line separator with no other content in that line.