During the 11.30.1 hotfix release, one Backoffice UI server was misconfigured, which caused traffic hitting that server to experience errors. The server was taken out of rotation as soon as it was identified, thereby routing all Backoffice UI traffic successfully through the other working server. Once the server was reconfigured correctly, the team brought it back up and confirmed traffic flowing successfully.
The issue only impacted the Backoffice UI and not Online Ticketing (B2C) or Point of Sale (POS). The team has already taken remedial steps to ensure this issue does not happen again.