Encode object version 2.51 does not match bootstrap parameter 3.01

I navigate to http://wiki.boossy.be and I get the following ugly Software error thrown in my face:

Encode object version 2.51 does not match bootstrap parameter 3.01 at /usr/lib64/perl5/DynaLoader.pm line 213.
 at /usr/lib64/perl5/DynaLoader.pm line 213.
   DynaLoader::bootstrap('Encode', 3.01) called at /usr/lib64/perl5/DynaLoader.pm line 105
   DynaLoader::bootstrap_inherit('Encode', 3.01) called at ~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 12
   Encode::BEGIN() called at ~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 13
   eval {...} called at ~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 13
   require Encode.pm called at ~/lib/Foswiki/Configure/Load.pm line 22
   Foswiki::Configure::Load::BEGIN() called at ~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 13
   eval {...} called at ~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 13
   require Foswiki/Configure/Load.pm called at ~/lib/Foswiki.pm line 53
   Foswiki::BEGIN() called at ~/wiki/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 13
   eval {...} called at ~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 13
   require Foswiki.pm called at view line 28
   main::BEGIN() called at ~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 13
   eval {...} called at ~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm line 13

Temporary solution

RENAME
~/lib/CPAN/lib/perl5/x86_64-linux-thread-multi/Encode.pm ► _Encode.pm

BUT now it's no longer possible to send mails from within the wiki...

Root cause & solution

DirectAdmin: Extra Features > !cPGuard Security
menu VIRUS SCANNER > SCANNER LOGS
- FILENAME: Encode.so, STATUS: DELETED
  => restored
  still no mail, XS.so required
- FILENAME: XS.so, STATUS: DELETED
  => restored
  mail functions OK!