Accessing WP Toolkit results in the following error:
WP Toolkit failed to perform backend request. Response code: 0
Please contact your service provider.
Make sure that 'sw-engine' and 'sw-cp-server' services are up and running.
This error can occur when the sw-engine or sw-cp-server services are not running.
1. Determine the status of sw-engine and sw-cp-server by running the following commands in SSH or WHM >> Terminal as root.
systemctl status sw-engine
systemctl status sw-cp-server
service status sw-engine
service status sw-cp-server
2. If either service is not running, you can use the following command to start the service (replace $SERVICE with the service that is not running):
systemctl start $SERVICE
service start $SERVICE