The proxy server received an invalid
response from an upstream server.
The proxy server could not handle the request GET /dataset/dataset/42395-shell-alcyone-buoy-walker-ridge-5522/resource/c5633232-dd47-4f2e-9a4f-dfa8b85ab31e.
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.