The proxy server received an invalid
response from an upstream server.
The proxy server could not handle the request GET /dataset/dataset/h12185-nos-hydrographic-survey-chatham-strait-alaska-2010-11-08/resource/2b514037-0a2c-4824-8965-2a7072f13963.
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.