when I open a browser window to https://api.sonos.com/login/v3/oauth?client_id=myid&response_type=code&state=mystateinb64&scope=playback-control-all&redirect_uri=my redirect url
i get to the SONOS "starting" screen, then I press "continue" I enter my sonos credentials , click connection then I get to the consent screen showing my APP name, so I click "OK" then I get a http 400 with body {error: "invalid_request"} and my authorization callback is never called
I checked the parameters, esp the client ID in the url , it is correct
any idea why would this be happenning ?