PLESK dont open

[MiguelK]

Hello,

I am trying to access plesk in a browser typing: 'https://domain.com:8443'

But the plesk panel doesnt open.
I get a blank screen.

I have followed these article but remain in the same 'error':
http://kb.odin.com/en/346

Can anyone give me some hints?

Thank you very much,

Miguel Koscianski Vidal