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Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /var/www/vhosts/aptavs.com/services/course.service.php:211 Stack trace: #0 /var/www/vhosts/aptavs.com/services/course.service.php(211): in_array() #1 [internal function]: {closure}() #2 /var/www/vhosts/aptavs.com/services/course.service.php(212): array_filter() #3 /var/www/vhosts/aptavs.com/services/course.service.php(285): getRelatedCoursesList() #4 /var/www/vhosts/aptavs.com/httpdocs/controllers/courses/detail.controller.php(38): getCourseByPathUrl() #5 /var/www/vhosts/aptavs.com/httpdocs/index.php(581): include('...') #6 {main} thrown in /var/www/vhosts/aptavs.com/services/course.service.php on line 211