Tasks in Plesk are never executed and stuck as new: Cannot fetch process propert

[senthil]

Symptoms

• Various tasks in Plesk are never executed, their status in the menu Tools & Settings > Task Manager is stuck in "new".
• The following error can be found in the log file /var/log/plesk/task-manager.log:
  
  Code Select Expand
  ERROR Cannot fetch process properties: Cannot fetch 'run-plesk-task-93137.service'
unit properties: dbus: connection closed by user

Cause
The service dbus.socket is stuck.

Resolution

• Connect to the server via SSH.
• Restart services dbus.socket and plesk-task-manager:
  Code Select Expand
  #systemctl restart dbus.socket plesk-task-managerWarning: in Debian 10 or Ubuntu 18.04, there might be the service polkit, which also
  should be up and running. Restart it using the command systemctl restart polkit in case the issue
  persists on these operating systems.