invalid_request: Internal server error

Hello!

I try use Sinatra example of omniauth-bnet, and get this error:

Authentication Failed:
message:invalid_request
{"message"=>"invalid_request", "origin"=>"http://mysite.com/", "strategy"=>"bnet"}

I test this multiple times, on different versions of ruby and gems, but still get "Internal server error"
which no explanation.

Anyone can help me? :)

Start by reproducing the failure in the Sinatra omniauth-bnet example and compare the reported behavior across the Ruby and gem versions mentioned. Trace the Battle.net authentication request and response to identify why invalid_request becomes an unexplained internal server error; done means documenting the cause and a reproducible resolution.

Written by the indexing model from the issue text.