Fatal error: Uncaught TypeError: Argument 1 passed to c_login::c_login_valid() must be of the type string, null given, called in /var/www/html/Applications/module/login/c_login.php on line 99 and defined in /var/www/html/Applications/module/login/c_login.php:106 Stack trace: #0 /var/www/html/Applications/module/login/c_login.php(99): c_login->c_login_valid(NULL, NULL) #1 /var/www/html/Applications/includes/library/l_front.php(202): c_login->c_login_login() #2 /var/www/html/Documents/index.php(23): l_front::run() #3 {main} thrown in /var/www/html/Applications/module/login/c_login.php on line 106