Fatal error: Uncaught TypeError: User::assignRoles(): Return value must be of type bool, null returned in /home/w15833/web/my.nes-ev.de/adm_program/system/classes/User.php:2217 Stack trace: #0 /home/w15833/web/my.nes-ev.de/adm_program/system/classes/User.php(921): User->assignRoles() #1 /home/w15833/web/my.nes-ev.de/adm_program/system/classes/HtmlForm.php(1477): User->getAllVisibleCategories('ROL') #2 /home/w15833/web/my.nes-ev.de/adm_program/modules/groups-roles/groups_roles.php(147): HtmlForm->addSelectBoxForCategories('cat_uuid', 'Kategorie', Object(Database), 'ROL', 'FILTER_CATEGORI...', Array) #3 {main} thrown in /home/w15833/web/my.nes-ev.de/adm_program/system/classes/User.php on line 2217