[Observium] CBQOS Class Names only show "/"

Hello,

I am a new user testing out Observium as a means of monitoring Cisco Class-Based Quality of Service (CBQoS). I have successfully added devices running Cisco IOS-XR 6.6.3 to the system for monitoring. However, the CBQoS tab of my device's ports is currently not showing any name for the different classes of policy maps applied to the ports. Instead, where the name should be, there is only "/ (output)". See attachment for screenshot of this issue.

I believe this issue matches the following Jira ticket:

https://jira.observium.org/browse/OBS-3130?page=com.atlassian.jira.plugin.sy...

Is there a known resolution or workaround this issue?

System Details: Observium Version: Observium CE 20.9 OS: CentOS Linux release 7.9.2009 (Core)

Thanks,

Evan