I've looked into this, and there is indeed a problem.
The bug is that it's incorrectly reporting that bugs are failing.
In actuality, bugs are being reported just fine, so please keep submitting them.
This issue should be resolved in our next push to Tribble.
This is back from late March, but I can confirm that I am still getting the [TicketError] issue when attempting to report a bug in game. Hopefully the bug reports are still going through and the issue is only testers receiving confirmation.
Edit: This also prevents searching for other existing bug reports and may result in a number of duplicate reports.