Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /var/www/html/c99shell.php:2549 Stack trace: #0 /var/www/html/c99shell.php(2549): in_array('ext_txt', NULL) #1 {main} thrown in /var/www/html/c99shell.php on line 2549