I have a live application that has been running for months. It just stopped sending out emails without warning. I have tried sending emails with different email server but it doesn't send. No error message, no delivery. I opened laravel.log and found this

[2015-10-13 07:36:48] production.ERROR: exception 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException' in /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Routing/RouteCollection.php:147 Stack trace: #0 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(1049): Illuminate\Routing\RouteCollection->match(Object(Illuminate\Http\Request)) #1 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(1017): Illuminate\Routing\Router->findRoute(Object(Illuminate\Http\Request)) #2 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(996): Illuminate\Routing\Router->dispatchToRoute(Object(Illuminate\Http\Request)) #3 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(776): Illuminate\Routing\Router->dispatch(Object(Illuminate\Http\Request)) #4 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(746): Illuminate\Foundation\Application->dispatch(Object(Illuminate\Http\Request)) #5 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Session/Middleware.php(72): Illuminate\Foundation\Application->handle(Object(Illuminate\Http\Request), 1, true) #6 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Cookie/Queue.php(47): Illuminate\Session\Middleware->handle(Object(Illuminate\Http\Request), 1, true) #7 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Cookie/Guard.php(51): Illuminate\Cookie\Queue->handle(Object(Illuminate\Http\Request), 1, true) #8 /home2/concepy6/public_html/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Illuminate\Cookie\Guard->handle(Object(Illuminate\Http\Request), 1, true) #9 /home2/concepy6/public_html/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(642): Stack\StackedHttpKernel->handle(Object(Illuminate\Http\Request)) #10 /home2/concepy6/public_html/index.php(51): Illuminate\Foundation\Application->run() #11 {main} [] []