The following error message appears in the Source tab of one of the tickets:
This list of changesets may be incomplete, as errors occurred retrieving changesets from the following repositories:
Repository Expert2 on http://crucible.ert.com:8060/ failed: Error in remote call to 'Crucible' (http://crucible.ert.com:8060) AbstractRestCommand{path='api/rest/query', params={query=select revisions from dir / where comment matches 'EXPRT-6639' order by date group by changeset return csid, rep=Expert2}, methodType=POST} : java.net.SocketTimeoutException: Read timed out