This Phabricator install is not configured with any enabled authentication providers which can be used to log in. If you have accidentally locked yourself out by disabling all providers, you can use
phabricator/bin/auth recover <username>to recover access to an administrative account.
If you see this error when trying to access your instance, it means you registered your first account inside your Phabricator instance but did not configure any way to log in, which is a necessary setup step.
To fix this, recover your account by going the exana.io management panel for your instance and select
Accounts. This will allow you to generate a one-time login link for your administrator account.
Use it log in to your instance and configure your preferred authentication methods (email, GitHub, etc.)