Just wanted to add a bit more detail here, which hopefully can be relayed to the relevant engineers if they're not already aware.
The underlying issue is a cross-site request to the GitHub API to retrieve details for the vmw-loginsight/vlcp repository. The request fails with a HTTP 401 (Unauthorized) response. Why that is I'm not sure; it appears to be some odd CORS handling on GitHub's end. As Benedikt notes, it works if the Origin request header is an IP address instead of a hostname, and if you send the request using curl but strip the scheme from the origin (e.g. "Origin: my.vrli.site") it also works.
More problematically: