Update StandaloneProvider

SpigotCore_Main/src/de/steamwar/sql/StandaloneProvider.java

@@ -183,7 +183,7 @@ public class StandaloneProvider implements Provider {
 
     @Override
     public List<SteamwarUser> getServerTeam() {
-        return Bukkit.getOperators().stream().map(OfflinePlayer::getName).map(this::getUserByName).collect(Collectors.toList());
+        return Bukkit.getOperators().stream().map(OfflinePlayer::getUniqueId).map(this::getUserByUUID).collect(Collectors.toList());
     }
 
     @Override