ok

app/Http/Controllers/Wap/User/CrmBooklistController.php

@@ -7,6 +7,7 @@ use Illuminate\Http\Request;
 use App\Http\Controllers\Controller;
 use App\Modules\Book\Services\CrmBookAutoRecommendService;
 use Hashids;
+use DB;
 
 class CrmBooklistController extends Controller
 {