Notice: Undefined index: HTTP_REFERER in /var/www/vhosts/norm.tr/muco.norm.tr/app/Controllers/Lang.php on line 17

Notice: Undefined index: HTTP_REFERER in /var/www/vhosts/norm.tr/muco.norm.tr/app/Controllers/Lang.php on line 18

Fatal error: Uncaught TypeError: Argument 1 passed to redirect() must be of the type string, null given, called in /var/www/vhosts/norm.tr/muco.norm.tr/app/Controllers/Lang.php on line 18 and defined in /var/www/vhosts/norm.tr/muco.norm.tr/src/Helpers/Functions.php:241 Stack trace: #0 /var/www/vhosts/norm.tr/muco.norm.tr/app/Controllers/Lang.php(18): redirect() #1 [internal function]: App\Controllers\Lang->index() #2 /var/www/vhosts/norm.tr/muco.norm.tr/vendor/izniburak/router/src/RouterCommand.php(256): call_user_func_array() #3 /var/www/vhosts/norm.tr/muco.norm.tr/vendor/izniburak/router/src/RouterCommand.php(203): Buki\Router\RouterCommand->runMethodWithParams() #4 /var/www/vhosts/norm.tr/muco.norm.tr/vendor/izniburak/router/src/Router.php(767): Buki\Router\RouterCommand->runRoute() #5 /var/www/vhosts/norm.tr/muco.norm.tr/vendor/izniburak/router/src/Router.php(304): Buki\Router\Router->runRouteCommand() #6 /var/www/vhosts/norm.tr/muco.norm.tr/src/Application.php(107): Buki\Router\Router->run() #7 /var/www/vhosts/norm.t in /var/www/vhosts/norm.tr/muco.norm.tr/src/Helpers/Functions.php on line 241