attempts to join the non-existent transaction group.

你好 请求频繁有这个错误怎么解决了？？？？
谢谢
2019-05-21 16:00:12.554 ERROR 1 --- [-rpc-service-70] c.c.t.t.t.t.JoinGroupExecuteService : attempts to join the non-existent transaction group. [29e1ad5b05a31ae7b02fea13e824ad22@service-transaction] @group(non)
2019-05-21 16:00:12.555 ERROR 1 --- [-rpc-service-70] c.c.txlcn.tm.txmsg.ServerRpcAnswer : rpc execute service error. action: joinGroup

com.codingapi.txlcn.common.exception.TxManagerException: attempts to join the non-existent transaction group. [29e1ad5b05a31ae7b02fea13e824ad22@service-transaction]
at com.codingapi.txlcn.tm.txmsg.transaction.JoinGroupExecuteService.execute(JoinGroupExecuteService.java:73) ~[txlcn-tm-5.0.2.RELEASE.jar!/:5.0.2.RELEASE]
at com.codingapi.txlcn.tm.txmsg.ServerRpcAnswer.lambda$callback$0(ServerRpcAnswer.java:71) ~[txlcn-tm-5.0.2.RELEASE.jar!/:5.0.2.RELEASE]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_111]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_111]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[na:1.8.0_111]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ~[na:1.8.0_111]
at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_111]

Start by reading JoinGroupExecuteService.java at line 73 and ServerRpcAnswer.java at line 71, then trace how transaction groups are created and joined. The report provides no reproduction steps or expected behavior; done would require identifying a reproducible cause and documenting or confirming the resolution.

索引モデルが issue の本文から書いたものです。