Fatal error: Uncaught TypeError: Argument 2 passed to learnpath::categoryIsVisibleForStudent() must be an instance of Chamilo\UserBundle\Entity\User, null given, called in /var/www/html/main/inc/lib/course_home.lib.php on line 728 and defined in /var/www/html/main/lp/learnpath.class.php:4828 Stack trace: #0 /var/www/html/main/inc/lib/course_home.lib.php(728): learnpath::categoryIsVisibleForStudent() #1 /var/www/html/main/inc/lib/course_home.lib.php(1781): CourseHome::get_tools_category() #2 /var/www/html/main/inc/lib/course_home.lib.php(1838): CourseHome::getStudentBlocks() #3 /var/www/html/main/course_home/activity.php(67): CourseHome::getUserBlocks() #4 /var/www/html/main/course_home/course_home.php(468): require('/var/www/html/m...') #5 {main} thrown in /var/www/html/main/lp/learnpath.class.php on line 4828