Hello, we have recently run into an issue where users are getting disconnected from Spark/the server after sending a message in a group chat; some when sending messages to another individual. Their directory is then stuck in a spinning "reconnecting " phase.
The error message in our logs is:
java.lang.IncompatibleClassChangeError: Found class org.jivesoftware.openfire.muc.MUCRoom, but interface was expected