first upload all files

Modules/Coupon/Config/permissions.php

@@ -0,0 +1,10 @@
+<?php
+
+return [
+    'admin.coupons' => [
+        'index' => 'coupon::permissions.index',
+        'create' => 'coupon::permissions.create',
+        'edit' => 'coupon::permissions.edit',
+        'destroy' => 'coupon::permissions.destroy',
+    ],
+];