Fatal error: Uncaught TypeError: mb_strtoupper(): Argument #1 ($string) must be of type string, array given in /var/www/html/mremnew/viewsm.php:199 Stack trace: #0 /var/www/html/mremnew/viewsm.php(199): mb_strtoupper() #1 {main} thrown in /var/www/html/mremnew/viewsm.php on line 199