The proxy server received an invalid
response from an upstream server.
The proxy server could not handle the request GET /dataset/dataset/46004-middle-nomad1/resource/5c3975ad-d935-4752-b91e-8828db422424.
Reason: DNS lookup failure for: os-data-catalog.ngdc.noaa.gov
Additionally, a 502 Bad Gateway error was encountered while trying to use an ErrorDocument to handle the request.