[Users] OVZ web pannel / cron error

[OCEANET - Cédric BASSAGET]

Hello,

Every day I get an error when Anacron tries to run 
/etc/cron.daily/owp.cron :

> /etc/cron.daily/owp.cron:
>
> /usr/lib64/ruby/gems/1.8/gems/rake-10.1.0/lib/rake/rdoctask.rb:2: ERROR: 'rake/rdoctask' is obsolete and no longer supported. Use 'rdoc/task' (available in RDoc 2.4.2+) instead. (RuntimeError)
> 	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
> 	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
> 	from /opt/ovz-web-panel//script/cron_runner:11

What can I do ? Is there a way to update rdoc safely ?

Regards,
Cédric