What is content host 'Global Status' and why it is in error state?

Issue

• From the Satellite webui, host status are in Error (red).
• Hammer host list shows 'Global Status' Error.

[root@rhsat ~]# hammer host list
---|-------------------------------|------------------   |------------|----------------|-------------------|---------------|---------------
ID | NAME                | OPERATING SYSTEM | HOST GROUP | IP             | MAC            | GLOBAL STATUS | CONTENT VIEW    LIFECYCLE ENVIRONMENT
---|------------------------------|------------------    |------------|----------------|-  ----------------|---------------|-------------------


14 | client2.example.com | RedHat 8.6       |            | xx.xx.xx.xx | xx:xx:xx:xx:xx:xx | Error         | Default Organization View |Library               
11 | client3.example.com | RedHat 8.4       |            | xx.xx.xx.xx | xx:xx:xx:xx:xx:xx | Error         | Default Organization View | Library