The proxy server received an invalid
response from an upstream server.
The proxy server could not handle the request GET /dataset/dataset/h11698-nos-hydrographic-survey-chatham-strait-alaska-2007-09-04/resource/efe53d15-625b-4aa2-b5b9-7949f47a7fd1.
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.