ContactList hide error when trying to get last activity

[stokito]

No description provided.

[Plyha]

Can you please show what you corrected with some example?

[stokito]

I have the exception in logs when hover a mouse over an offline contact from another server:

WARNING: Unable to get Last Activity from: stokito@yax.im
org.jivesoftware.smack.XMPPException$XMPPErrorException: XMPP error reply received from stokito@yax.im: XMPPError: service-unavailable - cancel
	at org.jivesoftware.smack.XMPPException$XMPPErrorException.ifHasErrorThenThrow(XMPPException.java:171)
	at org.jivesoftware.smack.XMPPException$XMPPErrorException.ifHasErrorThenThrow(XMPPException.java:165)
	at org.jivesoftware.smack.StanzaCollector.nextResultOrThrow(StanzaCollector.java:284)
	at org.jivesoftware.smack.StanzaCollector.nextResultOrThrow(StanzaCollector.java:228)
	at org.jivesoftware.smackx.iqlast.LastActivityManager.getLastActivity(LastActivityManager.java:240)
	at org.jivesoftware.spark.ui.ContactInfoWindow.customizeUI(ContactInfoWindow.java:241)
	at org.jivesoftware.spark.ui.ContactInfoWindow.setContactItem(ContactInfoWindow.java:325)
	at org.jivesoftware.spark.ui.ContactInfoWindow.display(ContactInfoWindow.java:184)
	at org.jivesoftware.spark.ui.ContactGroup$4.construct(ContactGroup.java:1055)
	at org.jivesoftware.spark.util.SwingWorker.lambda$new$0(SwingWorker.java:139)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Here I using my account on conversations.im and this seems like a problem of the server. That's strange because it uses latest ejaberd and the XEP-0012 must work without any issues.
The cause of the error can be that the stokito@yax.im contact is on another server (Prosody). So it can be s2s issue.
The last activity is not that important feature and the code will hide the exception