settings directory. It refers to it before booting up and if you have not set it up yet or made some mistakes, Bastion will not be able to start. So, this is a very important step.settings directory:configurations.yamlcredentials.yamlconfigurations.example.yaml and credentials.example.yaml. Make a copy of both these files and remove the .example part from the copies. Now, you should have these files inside the settings directory:configurations.yamlconfigurations.example.yamlcredentials.yamlcredentials.example.yamlconfigurations.yaml and credentials.yaml files to add (or edit) the configurations and credentials of Bastion, respectively. And after you do that, save the files.