invalid_section_format

Invalid format for the '{0}' section.

The analyzer produces this diagnostic when an analysis options file contains a configuration section (key) whose content is not in the expected data structure or format. For example, this occurs when the configuration requires a map but is provided a list.

The following code produces this diagnostic because the errors section expects to have a map as its value:

// %uri="analysis_options.yaml"
analyzer:
  errors:
    - dead_code

Change the value to be of the appropriate format:

// %uri="analysis_options.yaml"
analyzer:
  errors:
    dead_code: error