After updating from Ametys 4.4 to Ametys 4.5, it is impossible to export calendars (.ics) which have events containing the ametys-internal:synchronizedId property.
Log:
Caused by: java.lang.UnsupportedOperationException: Invitation is not implemented for messaging connector
at org.ametys.plugins.messagingconnector.AbstractMessagingConnector#internalIsEventExist:459
at org.ametys.plugins.messagingconnector.AbstractMessagingConnector#isEventExist:440
at org.ametys.plugins.workspaces.calendars.MessagingConnectorCalendarManager#isEventStillSynchronized:379
at org.ametys.plugins.workspaces.calendars.events.CalendarEventJSONHelper#eventAsJson:183
at org.ametys.plugins.workspaces.calendars.CalendarDAO#getCalendarData:115
at org.ametys.plugins.workspaces.calendars.actions.GetCalendarEvents#act:102
at org.apache.cocoon.components.treeprocessor.sitemap.ActTypeNode#invoke:125
at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode#invokeNodes:47
at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode#invoke:108
at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode#invokeNodes:69
at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode#invoke:143
at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode#invokeNodes:69
at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode#invoke:93
at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor#process:236
at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor#process:178
at org.apache.cocoon.components.treeprocessor.TreeProcessor#process:254
at org.apache.cocoon.components.treeprocessor.sitemap.MountNode#invoke:118
... 78 more