when I have more than one play, all players get kicked with error
lost connection: Internal Exception: io.netty.handler.codec.EncoderException: java.lang.NullPointerException: Cannot invoke "java.util.List.iterator()" because "trackedValues" is null
lost connection: Internal Exception: io.netty.handler.codec.EncoderException: java.lang.NullPointerException: Cannot invoke "java.util.List.iterator()" because "trackedValues" is null