Pade appears to indefinitely try to set a VCard. On servers were VCards cannot be modified, this is causing problems. Pade shouldn't continuously retry failed requests.
The error below is logged very two seconds.
2018.08.17 09:36:49 ERROR [Jetty-QTP-BOSH-1112]:
org.jivesoftware.openfire.handler.IQvCardHandler - VCard provider is read-only.
java.lang.UnsupportedOperationException: VCard provider is read-only.
at org.jivesoftware.openfire.vcard.VCardManager.setVCard(VCardManager.java:158)
at org.jivesoftware.openfire.handler.IQvCardHandler.handleIQ(IQvCardHandler.java:90)