Comment 8 for bug 1178286

(In reply to comment #6)
> looks like changing that line to use m_request.url.host() might be the
> correct solution.

Having the full URL that triggered this error would help finding the issue, so I'm not certain that just keeping the hostname would be satisfying to most users. As for the usage of this string there's a new line between 'Internal error in server' and the error text, which makes mes doubt that %1 stands for the hostname in the full message.

Otherwise, looking around this line the m_request.url.url() is also used in the same way (lines 3075 and 3077). I'll also replace those with prettyUrl().