Dot1x support and User Manager

I am trying to enable dot1x with User Manager to authenticate the connection. This is in a lab environment being used for testing not for production so User Manager appears to be a simple way of doing this.

I have configured as follows: -
Radius Tab
Service dot1x, Address 127.0.0.1, Protocol UDP, Secret configured, Auth and accounting ports set to 1812 and 1813 respectively
In the Incoming tab: -
Selected accept, Left defaults 3799 and VRF main
User Manager
Added a router, Named self, Configured secret, Address 127.0.0.1, CA Port 3799
I then created a user and set the user to be part of the default group.

In logs I see the following: -
sending Access-Request with id 8 to 127.0.0.1:1812
[…]
Unknown-Attribute(type=102) = 0x00
[…]
NAS-IP-Address = 127.0.0.1
ether24 “h200” radius req timeout on dot1x, waiting for eap timeout

I do not see anything else in the logs which points at the problem. Thanks in advance for any support you can offer