Add all files

app/Admin/Resources/CouponResource/Pages/CreateCoupon.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Admin\Resources\CouponResource\Pages;
+
+use App\Admin\Resources\CouponResource;
+use Filament\Resources\Pages\CreateRecord;
+
+class CreateCoupon extends CreateRecord
+{
+    protected static string $resource = CouponResource::class;
+}

app/Admin/Resources/CouponResource/Pages/EditCoupon.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Admin\Resources\CouponResource\Pages;
+
+use App\Admin\Resources\CouponResource;
+use Filament\Actions;
+use Filament\Resources\Pages\EditRecord;
+
+class EditCoupon extends EditRecord
+{
+    protected static string $resource = CouponResource::class;
+
+    protected function getHeaderActions(): array
+    {
+        return [
+            Actions\DeleteAction::make(),
+        ];
+    }
+}

app/Admin/Resources/CouponResource/Pages/ListCoupons.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Admin\Resources\CouponResource\Pages;
+
+use App\Admin\Resources\CouponResource;
+use Filament\Actions;
+use Filament\Resources\Pages\ListRecords;
+
+class ListCoupons extends ListRecords
+{
+    protected static string $resource = CouponResource::class;
+
+    protected function getHeaderActions(): array
+    {
+        return [
+            Actions\CreateAction::make(),
+        ];
+    }
+}