There's some error on my site!

[jonathanburac]

There's some error on my site, it shows white screen only when I'm logged in and I can't navigate to any pages on my site. All of the problem was showing only in the backend. In frontend, it shows that the site is okay. Here is the link: jonathanburac.altervista.org

[karl94]

You should be able to solve the issue by using the recovery mode.