I'm still using a really old version of Bugzilla (3.x) myself. I have
not had opportunity to try the later versions. Hopefully there some
other folks on this mailing list who may be able to help you out.
> Starting httpd: Subroutine testopia_queries redefined at /var/www/html/bugzilla/Bugzilla/User.pm line 810.
This error seems to suggest that the function "testopia_queries" has been
defined more than once. I wonder how that could have happened. In the
older versions of Testopia, a patch had to be applied to Bugzilla.
But the newer version no longer requires it.
> Global symbol "$sth" requires explicit package name at /var/www/html/bugzilla/Bugzilla/User.pm line 1160.
This also suggests that the file User.pm from Bugzilla has been modified,
however with the newer Testopia 2.5 this file should not require changes.
I would perhaps suggest trying a fresh install of Bugzilla, make sure that
it works, then untar Testopia over top of it. This should not change any
of the existing Bugzilla files such as User.pm.