dd

app/Http/Controllers/Game/ActivityController.php

@@ -160,7 +160,7 @@ class ActivityController extends Controller
 
         $cooldownLeftSeconds = 0;
         $cooldownEndTime = null;
-        $lastRecvTime = $recordProtectList->UpdateDate;
+        $lastRecvTime = $recordProtectList->UpdateDate ?? null;
 
         if (!empty($lastRecvTime)) {
             $end = Carbon::parse($lastRecvTime)->addSeconds($cooldownSeconds);