I'am upgrading zed to antelope using kolla-ansible and encount following error 

TASK [nova : Upgrade status check result] ************************************************************************************************************************************************************
fatal: [kolla-infra-1]: FAILED! => {"changed": false, "msg": ["There was an upgrade status check failure!", "See the detail at https://docs.openstack.org/nova/latest/cli/nova-status.html#nova-status-checks"]}
fatal: [kolla-infra-2]: FAILED! => {"changed": false, "msg": ["There was an upgrade status check failure!", "See the detail at https://docs.openstack.org/nova/latest/cli/nova-status.html#nova-status-checks"]}
fatal: [kolla-infra-3]: FAILED! => {"changed": false, "msg": ["There was an upgrade status check failure!", "See the detail at https://docs.openstack.org/nova/latest/cli/nova-status.html#nova-status-checks"]}

After running upgrade check command manually on nova-api container got following error 

(nova-api)[root@kolla-infra-2 /]# nova-status upgrade check
Modules with known eventlet monkey patching issues were imported prior to eventlet monkey patching: urllib3. This warning can usually be ignored if the caller is only importing and not executing nova code.
+---------------------------------------------------------------------+
| Upgrade Check Results                                               |
+---------------------------------------------------------------------+
| Check: Cells v2                                                     |
| Result: Success                                                     |
| Details: None                                                       |
+---------------------------------------------------------------------+
| Check: Placement API                                                |
| Result: Success                                                     |
| Details: None                                                       |
+---------------------------------------------------------------------+
| Check: Cinder API                                                   |
| Result: Success                                                     |
| Details: None                                                       |
+---------------------------------------------------------------------+
| Check: Policy File JSON to YAML Migration                           |
| Result: Success                                                     |
| Details: None                                                       |
+---------------------------------------------------------------------+
| Check: Older than N-1 computes                                      |
| Result: Success                                                     |
| Details: None                                                       |
+---------------------------------------------------------------------+
| Check: hw_machine_type unset                                        |
| Result: Success                                                     |
| Details: None                                                       |
+---------------------------------------------------------------------+
| Check: Service User Token Configuration                             |
| Result: Failure                                                     |
| Details:  Service user token configuration is required for all Nova |
|   services. For more details see the following: https://docs        |
|   .openstack.org/latest/nova/admin/configuration/service-           |
|   user-token.html                                                   |
+---------------------------------------------------------------------+

Service user token reference to the following doc [1] . Do I need to configure token users in order to upgrade nova? 

[1] https://docs.openstack.org/nova/latest/admin/configuration/service-user-token.html