FORCDK-SCROLL-AREA-002
Thrown by forty-cdk/scroll-area.
[forty-cdk/scroll-area] FORCDK-SCROLL-AREA-002: ForScrollAreaThumb must be used inside a [forScrollAreaScrollbar] element.
Cause
No ForScrollAreaScrollbar provider is visible from ForScrollAreaThumb. Angular resolves a directive's dependencies at the template's declaration site rather than where it is stamped, so a piece declared in an ng-template outside the root resolves nothing even when it renders inside it.
Fix
Move ForScrollAreaThumb inside a [forScrollAreaScrollbar] element, declaring any ng-template it lives in there too.