When your Satellite is a non-IoP setup and you add the Total CVEs column to the All Hosts table (new UI), it attempts to make requests to insights_cloud/api/vulnerability/v1/systems?uuid=xxxx. This results in a 502 Bad Gateway error logged in the JS console.

For non-IoP setups, (a) if the column is added, it should not attempt the request; and/or (b) the column should not be available to add, since Vulnerability service is IoP-only.