[rt-users] Too many Undefined subroutine in rt.log

[Alex Decalli]

Hi.

I have recently upgraded Ubuntu 11.04 and packages (not RT,RT is still
3.8.10) since then, I cannot load any page after I login, it is just the
left menu and this message comes after any link I click on:

An internal RT error has occurred. Your administrator can find more details
in RT's log files.

I am checking the log file and it is full of undefined subroutins:

[Wed Aug 21 11:46:14 2013] [error]: Undefined subroutine
&HTML::Mason::Commands::ScrubHTML called at
/usr/share/request-tracker3.8/html/Elements/ScrubHTML line 49, <GEN17> line
1510. (/usr/share/request-tracker3.8/lib/RT/Interface/Web/Handler.pm:278)
[Wed Aug 21 11:46:16 2013] [error]: Undefined subroutine
&HTML::Mason::Commands::ScrubHTML called at
/usr/share/request-tracker3.8/html/Elements/ScrubHTML line 49, <GEN19> line
1511. (/usr/share/request-tracker3.8/lib/RT/Interface/Web/Handler.pm:278)
[Wed Aug 21 11:46:18 2013] [error]: Undefined subroutine
&HTML::Mason::Commands::ScrubHTML called at
/usr/share/request-tracker3.8/html/Elements/ScrubHTML line 49, <GEN21> line
1511. (/usr/share/request-tracker3.8/lib/RT/Interface/Web/Handler.pm:278)
[Wed Aug 21 11:46:25 2013] [error]: Undefined subroutine
&HTML::Mason::Commands::ScrubHTML called at
/usr/share/request-tracker3.8/html/Elements/ScrubHTML line 49, <GEN23> line
1511. (/usr/share/request-tracker3.8/lib/RT/Interface/Web/Handler.pm:278)
[Wed Aug 21 12:26:48 2013] [error]: Undefined subroutine
&RT::Interface::Web::EscapeJS called at
/usr/local/share/perl/5.12.4/HTML/Mason/Interp.pm line 1020.
(/usr/share/request-tracker3.8/lib/RT/Interface/Web/Handler.pm:278)

What possibly causes this? Any perl modules I need? I already have these
installed, tell me if I need more:

   Apache::DBI
   DateTime::Format::Mail
   Digest::MD5
   HTML::Mason
   MLDBM
   Perl
   Test::Deep
   Test::NoWarnings
   Test::Tester

Thanks
Alex
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