“garnicht” is a common German spelling error.

The standard spelling is “gar nicht.”

Example

[Strophe]
Das ist garnicht wahr

[Strophe]
Das ist gar nicht wahr

The fix

In the workbench this finding carries one control, labelled Replace with gar nicht. The change is contextual, so it is previewed as a diff in your document first and applies only when you confirm it.

Source

The guideline this rule enforces, as cited on every finding it reports: