Adding default logic to handles 404s.

app/Exceptions/Handler.php

@@ -8,6 +8,7 @@ use Illuminate\Auth\Access\AuthorizationException;
 use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Symfony\Component\HttpKernel\Exception\HttpException;
 use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
 class Handler extends ExceptionHandler
 {
@@ -45,6 +46,21 @@ class Handler extends ExceptionHandler
      */
     public function render($request, Exception $e)
     {
+        if (config('app.debug') === false) {
+            return $this->handleExceptions($e);
+        }
+
         return parent::render($request, $e);
     }
+
+    private function handleExceptions($e)
+    {
+        if ($e instanceof ModelNotFoundException) {
+            return response()->view('errors.404', [], 404);
+        }
+
+        if ($e instanceof NotFoundHttpException) {
+            return response()->view('errors.404', [], 404);
+        }
+    }
 }