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Start a conference and Argument can't be the empty string

We recently upgrade to Openfire 4.5.3 and Spark 2.9.3 and realize we can no longer click on Start a conference. I downgraded to 2.8.3 and found we can Start a conference with that version of Spark. In the error.log I found the line “Exception in thread “AWT-EventQueue-0” java.lang.IllegalArgumentException: org.jxmpp.stringprep.XmppStringprepException: XmppStringprepException caused by ‘epayne_2Ti’: org.jxmpp.stringprep.XmppStringprepException: Argument can’t be the empty string”. If the user clicks Actions >> Join conference room and then clicks Create or join room. They are able to create a room and invite users, so to me it is not a permissions issue.

Thanks for reporting. I’m puzzled nobody stumbled upon this yet :slight_smile: Well, there is a workaround doing this via conference browser, at least.

A fix has been provided in https://github.com/igniterealtime/Spark/pull/562 - it will most likely go into release 2.9.4.

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You can test the fix with this test build https://bamboo.igniterealtime.org/browse/SPARK-NIGHTLY-1561/artifact/shared/Install4j-generated-media/

Or you can wait for 2.9.4 release, which should be in the coming weeks, i guess.