Should I Buy a user name to be able to run hello demo locally?

Hi,

When I run the Hello demo locally, I had an Invalid Sign In Request message.
On the console I have some javascript errors :

auth.js: loadAppManifest: error URI request couldn’t be completed
actions.js: refreshCoreWalletBalance: error refreshing balance [TypeError: NetworkError when attempting
login(): this profile 15pbkErHL5rX5dB2pWXwJKnZzcidNebQ16 has no username

@MaherBTA We have made this available to anonymous profiles like the one you mention there. What version of the Blockstack Browser are you running?