Error:2019-12-11 05:59:24.583 UTC [common.deliver] deliverBlocks → WARN 062 [channel: mychannel] Rejecting deliver request for 172.18.0.23:48168 because of consenter error
if random leader election campaign going on due to *leader orderer crash* or re-initiate election due to split vote case or some other scenario and you are trying to invoke the transaction.you will get such error.
make sure there is always leader orderer present.