Steps to reproduce:

1. Configure monitoring of the openstack with OpenStack by HTTP
2. get not working item Get access token and service catalog, since it returns x-subject-token

Modify:

try {
 token = headers["X-Subject-Token"][0];

with this one:

try {
 token = headers["x-subject-token"][0];

And it starts working.

Expected:
According to the HTTP specification (RFC 7230), header field names are case-insensitive.
Issue itself: parseHttpData function on this line:

token = headers["X-Subject-Token"][0];

Something like this:

    for (const key in headers) {
        if (key.toLowerCase() === 'x-subject-token') {
            if (Array.isArray(headers[key]) && headers[key].length > 0) {
                token = headers[key][0];
            }
            break;
        }
    }