- add to LocalSettings.php line: $wgDynamicSidebarUsePageCategories = true;
- Probably disable user page category by correct line 28 in DynamicSidebar.Body.php: if ( $wgDynamicSidebarUseCategories && isset( $sidebar['UCATEGORY-SIDEBAR'] ) ) {
In my MediWikia (1.30) it work now