caseSuggestions.lean:11:2-12:8: error: Case tag 'nonexistent' not found.

There are no cases to select.
caseSuggestions.lean:20:2-21:8: error: Case tag 'nonexistent' not found.

The only available case tag is 'unit'.
caseSuggestions.lean:29:2-30:8: error: Case tag 'nonexistent' not found.

Available tags: 'false', 'true'
caseSuggestions.lean:34:2-35:8: error: Case tag 'nonexistent' not found.

Available tags: 'false.false', 'false.true', 'true.false', 'true.true'
caseSuggestions.lean:39:2-40:8: error: Case tag 'nonexistent' not found.

Available tags:
  'false.false.false',
  'false.false.true',
  'false.true.false',
  'false.true.true',
  'true.false.false',
  'true.false.true',
  'true.true.false',
  'true.true.true'
caseSuggestions.lean:44:2-45:8: error: Case tag 'nonexistent' not found.

Available tags:
  'false.false.false.false',
  'false.false.false.true',
  'false.false.true.false',
  'false.false.true.true',
  'false.true.false.false',
  'false.true.false.true',
  'false.true.true.false',
  'false.true.true.true',
  'true.false.false.false',
  'true.false.false.true',
  'true.false.true.false',
  'true.false.true.true',
  'true.true.false.false',
  'true.true.false.true',
  'true.true.true.false',
  'true.true.true.true'