Fatal error: Uncaught Error: Undefined constant Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_ALL in /var/www/seeko-ir/bootstrap/app.php:37 Stack trace: #0 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Foundation/Configuration/ApplicationBuilder.php(294): {closure:/var/www/seeko-ir/bootstrap/app.php:32}(Object(Illuminate\Foundation\Configuration\Middleware)) #1 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Container/Container.php(1645): Illuminate\Foundation\Configuration\ApplicationBuilder->{closure:Illuminate\Foundation\Configuration\ApplicationBuilder::withMiddleware():289}(Object(Illuminate\Foundation\Http\Kernel), Object(Illuminate\Foundation\Application)) #2 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Container/Container.php(1583): Illuminate\Container\Container->fireCallbackArray(Object(Illuminate\Foundation\Http\Kernel), Array) #3 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Container/Container.php(1569): Illuminate\Container\Container->fireAfterResolvingCallbacks('Illuminate\\Cont...', Object(Illuminate\Foundation\Http\Kernel)) #4 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Container/Container.php(957): Illuminate\Container\Container->fireResolvingCallbacks('Illuminate\\Cont...', Object(Illuminate\Foundation\Http\Kernel)) #5 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1085): Illuminate\Container\Container->resolve('Illuminate\\Cont...', Array, true) #6 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Container/Container.php(867): Illuminate\Foundation\Application->resolve('Illuminate\\Cont...', Array) #7 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1065): Illuminate\Container\Container->make('Illuminate\\Cont...', Array) #8 /var/www/seeko-ir/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1225): Illuminate\Foundation\Application->make('Illuminate\\Cont...') #9 /var/www/seeko-ir/public/index.php(261): Illuminate\Foundation\Application->handleRequest(Object(Illuminate\Http\Request)) #10 {main} thrown in /var/www/seeko-ir/bootstrap/app.php on line 37