Screenshot of described error.
While working at ACC on the English Wikipedia, I came across an expected error. While the error was fine, the message itself needs to be fixed as the link is shown improperly. I have attached a screenshot and the text of said error is pasted here:
The requested username is already taken in the <a href="http://meta.wikimedia.org/wiki/Help:Unified_login">unified login system</a>. Please choose a different name.
Version: 1.21.x
Severity: normal
Attached: