first commit

environments/prod/backend/config/main-local.php

@@ -0,0 +1,10 @@
+<?php
+
+return [
+    'components' => [
+        'request' => [
+            // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
+            'cookieValidationKey' => '',
+        ],
+    ],
+];