I see you have the LDAP module disabled. Enable it like this
sg_config.yml
authc:
ldap:
enabled: true
authz:
ldap:
enabled: true
See the docs to find out more about all available LDAP authc and authz options.
Also, don’t change ldap module name in sg_config.yml. There is a bug that prevents rendering the LDAP module information in the UI if the name was changed. The bug will be fixed in the next release.