Issue with Select field and relationships

Select::make('course_id')
                    ->label('Course')
                    ->relationship('course')
                    ->getOptionLabelFromRecordUsing(fn (Course $record) => CourseQuery::formatTitle($record))
                    ->getSearchResultsUsing(CourseQuery::search(...))
                    ->searchable()
                    ->visible(fn (Get $get) => $get('room_type_id') == 2),