https://knowledge.broadcom.com/external/article/290856/edr-cbupgrade-migrating-feeds-cannot-con.html
EDR: Cbupgrade Migrating Feeds Cannot Connect Error 502
connect erroredrmigratingfeedscannot
https://knowledge.broadcom.com/external/article/287995/cbupgrade-loops-with-500-error-on-cbfeed.html
Cbupgrade Loops with 500 Error on cbfeeds Core with Domain Search Errors.
domain searchloopserror