We have found some commands in Attracta plugin have run the error in RVSkin. The solution is to run the commands below.

rm -rf /usr/local/cpanel/hooks/rvskinindex

/usr/local/cpanel/bin/register_hook

rm -f /usr/local/cpanel/Cpanel/CustomEventHandler.pm

Any time you update Attracta, please don't forget to run those commands.

Anyway, if you want to un-install due to the error, don't forget to run the following command after running un-install attractta script.

perl /root/rvadmin/autoupdatewhmaddon.pl

The blank box will be disappeared then.