Fix spin ticket reward threading

Plugins/Mineplex.Core/src/mineplex/core/reward/rewards/SpinTicketReward.java

@@ -83,7 +83,10 @@ public class SpinTicketReward extends Reward
 				{
 					final int newTickets = rs.getInt(1);
 					
-					ticketCallback.run(newTickets);
+					_clientManager.runSync(() ->
+                                        {
+                                               ticketCallback.run(newTickets);
+                                        });
 				}
 			}
 			catch (Exception e)
@@ -117,4 +120,4 @@ public class SpinTicketReward extends Reward
 		}
 		return false;
 	}
-}
+}