ops-bgp-role in openswitch not working

[titusrdx]

I trying to existing build-fabric playbook in openswitch but getting error for tasks ops-bgp-role.

TASK [ops-bgp-role : configure the bgp role] ***********************************
fatal: [spine1]: FAILED! => {"failed": true, "msg": "'vrf' is undefined"}
fatal: [spine2]: FAILED! => {"failed": true, "msg": "'vrf' is undefined"}
fatal: [leaf3]: FAILED! => {"failed": true, "msg": "'vrf' is undefined"}
fatal: [leaf1]: FAILED! => {"failed": true, "msg": "'vrf' is undefined"}
fatal: [leaf2]: FAILED! => {"failed": true, "msg": "'vrf' is undefined"}
fatal: [leaf4]: FAILED! => {"failed": true, "msg": "'vrf' is undefined"}