Cannot protect agentless VM


i am trying to protect a 2003 server VM on an ESXi 6.5 using a fresh install of RR 6.2..1.100

Adding the machine seem to works, but if i click on it it then says "Unable to get details for 'VMNAME'. ( Details ) "

Stack trace says :

Server side:
System.NullReferenceException: object reference not set to an instance of an object.
à Replay.Core.Management.Agents.AgentCredentialsExtensions.ClearPasswords(AgentDetailsInfo agentDetailsInfo)
à Replay.Core.Management.Agents.AgentsManagement.GetAgentDetails(String agentId)

UI side:
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at Replay.Core.Web.Controllers.ProtectedEsxVirtualMachinesController.GetMachineDetailes(Guid id)
at Replay.Core.Web.Controllers.ProtectedEsxVirtualMachinesController.Index(Guid id)