Internat error after automatically plesk update Please help

Hello

I have a dedicate server in soyoustart.com my server sie standing on centos 6 64bit Linux nad i have a problem because i am newbie. Two days ago at night my server have a automatically update to new plesk version i dont now what version it is. It is Mayby 12.5.30 version. You can check how version i have on this link : https://94.23.248.59:8443/login_up.php3

My problem is when i log into my plesk panel i saw a
Internal error: sh:...

Internat error after automatically plesk update Please help