My launcher has an error that says the default server is not available

First, check if you started the server (Aki.Server.exe) and that you see this message

This means the server is now running.

If your launcher still can't find the server, go to its settings (top right)
And double check if URL is the same as what the web server started at in the green message

By default, both should be http://127.0.0.1:6969

If the server comes online after the message is already there, you can also just hit the retry button.

I've got the same problem. How did you get it working?

Quote from 10 of Spades

nvm i got it working thank you for all the help and sorry for the hassle

If you got it working, please let others know what exactly fixed your issue.