adding env to app config

config/app.php

@@ -2,6 +2,19 @@
 
 return [
 
+    /*
+    |--------------------------------------------------------------------------
+    | Application Environment
+    |--------------------------------------------------------------------------
+    |
+    | This value determines the "environment" your application is currently
+    | running in. This may determine how you prefer to configure various
+    | services your application utilizes. Set this in your ".env" file.
+    |
+    */
+
+    'env' => env('APP_ENV', 'production'),
+
     /*
     |--------------------------------------------------------------------------
     | Application Debug Mode