Internal Plesk error

[Josh]

Hallo,
ich bekomme diese Fehlermeldung:

Service is not available now, probably your Plesk is misconfigured.
Contact Your provider for details.

Internal Plesk error occurred: Unable to get system shells: Unable to fork [/usr/local/psa/admin/bin/sysinfo 'getshell']

Habe Plesk auch schon mal neu gestartet, was das System aber nicht zuließ.

Kann jemeand helfen?

Josh