This is the module configuration issue. It happens when all datastores are disabled (From "WGS VMware addon module" >> "Provisioning Setting" under specific "Datacenter" >> "Host") or there is not enough space in the "Datastores".
To fix this error, follow the given below steps.
1. Go to "WGS VMware" addon module >> "Provisioning Setting" with WHMCS admin. Click on specific Datacenter and then specific host and then make sure this option "Disable Datastore" should not be enabled. If enabled then untick this option and save the changes.
2. If everything is enabled then increase your datastore disk space.
