Warning: Unknown(auth.php3): failed to open stream

[bruzli]

For avout 2 days ago, I cann't login to plesk.

I restarted psa all ok, the sites are working, still I cannont login, I get the following error:

Warning: Unknown(auth.php3): failed to open stream: No such file or directory in Unknown on line 0

Warning: (null)(): Failed opening 'auth.php3' for inclusion (include_path='.:') in Unknown on line 0