When I open Tools & Settings > Services Management, the following error is shown:
Call to a member function getServiceStatus() on a non-object in class.ServiceControl.php on line 312
The 'Courier IMAP server' package is installed without the mail server.
This situation is known as internal issue PPPM-1846.
Launch the autoinstaller:
- Install a mail server package (Qmail or Postfix), or remove the 'Courier IMAP server' package.