I have configured TestRail (cloud) to talk with our internal YouTrack. It basically works with the URLs (i.e. I can open the Reference or Defect), but the preview popup throws an error:
“Plugin “YouTrack” returned an error: StartTag: invalid element name Entity ‘nbsp’ not defined”
What does that mean. Is it a problem on YouTrack side or on TestRail side?
My configuration looks like this: