The proxy server received an invalid
response from an upstream server.
The proxy server could not handle the request GET /dataset/dataset/h10549-nos-hydrographic-survey-southern-alaska-peninsula-alaska-1994-07-13/resource/b526d054-1cb9-447f-bc6f-726237517d60.
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.