After the upgrade to 5.4 the vranger GUI does not start and you get the following error:
Connection to service failed
Could not connect to service
Would you like to attempt to connect again?
The upgrade has been completed without any error messages
This is caused by an issue when upgrading your vCenter.
Remove the templates from the inventory that are causing the duplicate datastores. The duplicate datastores should then disappear from your VC. You may then need to rename your datastores to remove the "_1".
Once this is done re-open your vRanger GUI.