Added null check on GetCid if it is empty, would return zero

LightlessSync/Services/DalamudUtilService.cs

@@ -490,6 +490,10 @@ public class DalamudUtilService : IHostedService, IMediatorSubscriber
     {
         EnsureIsOnFramework();
         var playerChar = GetPlayerCharacter();
+
+        if (playerChar == null || playerChar.Address == IntPtr.Zero)
+            return 0;
+
         return ((BattleChara*)playerChar.Address)->Character.ContentId;
     }