after ugrade from version 1.2 to 2.3 of hazelcast plugin, the cluster not working.
In the admin console retrieve this error
"Failed to start or join an existing cluster. Check the error log for more information. "
In log files
mar 28, 2018 12:52:34 PM com.hazelcast.config.ClasspathXmlConfig
INFO: Configuring Hazelcast from ‘hazelcast-cache-config.xml’.
mar 28, 2018 12:52:34 PM com.hazelcast.config.AbstractConfigBuilder
WARNING: Could not find a value for property ‘openfireHome’ on node: resource