sess-man { 'urn:xmpp:mam:1' () { } }
The error:
AbstractBeanConfigurator.registerBeans(): unknown class null for bean urn:xmpp:mam:1, skipping registration of a bean with 8.1.
Do you have full Tigase XMPP Server 8.1.0-SNAPSHOT distribution archive unpacked?
That addon is part of the Tigase Message Archiving component which is included with -dist-max distribution archive of Tigase XMPP Server.
-dist-max
I debugged it locally.
I know, I forgot a dependence about the MAM.
Is it this dependence of tigase-message-archiving?
Yes, it is ok.
The error: