I'm using the new Ad Exchange Buyers API II with the Golang Client Package to get realtime RTB Troubleshooting data. I'm creating transient filterSets every hour and querying the various APIs in order to fetch the metrics. All of the APIs work except for the Bidders.FilterSets.FilteredBids.List() API, which consistently returns the error "googleapi: Error 500: Internal error encountered., backendError". There seems to be a problem on the Google side whenever this request is made. This error happens regardless of the filterSet used.
Any help is appreciated, we really want to get this fixed so we can get these metrics.