Warning: Trying to access array offset on null in /var/www/html/ccvte-web/skill-courses.php on line 12

Fatal error: Uncaught TypeError: implode(): Argument #1 ($array) must be of type array, string given in /var/www/html/ccvte-web/skill-courses.php:12 Stack trace: #0 /var/www/html/ccvte-web/skill-courses.php(12): implode() #1 {main} thrown in /var/www/html/ccvte-web/skill-courses.php on line 12