即使交易成功并提交给所有对等方，订购者日志在广播过程中仍显示以下错误（突出显示）：
2018-12-19 13:43:42.724 UTC [policies] Evaluate -> DEBU 997 == Done Evaluating *policies.implicitMetaPolicy Policy /Channel/Writers
2018-12-19 13:43:42.724 UTC [orderer/common/broadcast] Handle -> DEBU 998 [channel: mychannel] Broadcast has successfully enqueued message of type ENDORSER_TRANSACTION from 172.19.0.7:40978
2018-12-19 13:43:42.724 UTC [orderer/common/blockcutter] Ordered -> DEBU 999 Enqueuing message into batch
2018-12-19 13:43:42.724 UTC [orderer/consensus/solo] main -> DEBU 99a Just began 2s batch timer
2018-12-19 13:43:42.730 UTC [grpc] infof -> DEBU 99b transport: loopyWriter.run returning. connection error: desc = "transport is closing"
2018-12-19 13：43：42.730 UTC [orderer / common / broadcast]句柄->警告 从172.19.0.7:40978读取99c错误：rpc错误：代码=已取消 desc =上下文已取消
2018-12-19 13:43:42.731 UTC [orderer/common/server] func1 -> DEBU 99d Closing Broadcast stream
2018-12-19 13:43:44.724 UTC [orderer/consensus/solo] main -> DEBU 99e Batch timer expired, creating block
2018-12-19 13:43:44.724 UTC [msp] GetDefaultSigningIdentity -> DEBU 99f Obtaining default signing identity
Fabric Config：所有配置和设置与在https://hyperledger-fabric.readthedocs.io/en/release-1.3/build_network.html
的构建您的第一网络教程中指定的相同。查询
此错误是什么意思？订购者在广播期间从cli（cli的IP：172.19.0.7:40978）中读取了什么内容？