java.lang.NullPointerException: null value in entry: mimeMessageId=null
at com.google.common.collect.CollectPreconditions.checkEntryNotNull(CollectPreconditions.java:33)
at com.google.common.collect.ImmutableMapEntry.<init>(ImmutableMapEntry.java:54)
at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:341)
at com.google.common.collect.ImmutableMap.of(ImmutableMap.java:158)
at com.linagora.tmail.mailets.TmailLocalDelivery.$anonfun$service$1(TmailLocalDelivery.scala:39)
at org.apache.james.util.AuditTrail$Entry.parameters(AuditTrail.java:102)
at com.linagora.tmail.mailets.TmailLocalDelivery.service(TmailLocalDelivery.scala:35)
Avoid that warning?