[bug] Adding a cracked username doesn't work

[AngelBePro]

When trying to add a username that is not used by a premium account, it just doesn't get added. Only thing I'm getting is this:

[OkHttp ConnectionPool/WARN]: [okhttp3.OkHttpClient] A connection to https://api.mojang.com/ was leaked. Did you forget to close a response body? To see where this was allocated, set the OkHttpClient logger level to FINE: Logger.getLogger(OkHttpClient.class.getName()).setLevel(Level.FINE); x4

Hope this helps!