I am running blockstack browser on ubuntu.
when I approve the request to login i get this error on the console:
http://localhost:6270/v1/node/drivers/storage/dropbox : Error: Forbidden
the blockstack api is working.
In addition I have the problem the the login request opens localhost on 8888 but does not find anything.
I had the same problem. that problem only exist on ubuntu.
and after a long journey of debugging I discovered that you need to create an URL handler.
you can execute the create-handler-linux() that exists in the Launcher.sh but it didn’t work for me either.
so I needed to create a custom handler for Firefox.
good luck bro.
aaron helped me to resolve this. It was a wrong blockstack api password, you have to use the one from client.ini (e.g. in ~/.blockstack/client.ini)