Authentication loop

[nsauter]

Hi,

i installed this module in my etherpad instance and configured the ldap server in settings.json if i start the etherpad server i get prompted for username and passwort. If i enter everything correct i can only see

[2019-11-28 16:17:22.059] [INFO] ueberDB - Flushed 1 values

and i get stuck in a authentication loop after that.

If i enter the wrong password the ldap server shows me a error (thats what i expect) and node.js echos me:
[2019-11-28 16:18:50.205] [ERROR] console - ep_ldapauth.authenticate: LDAP auth error: password verify failed. could not bind dn uid=username,ou=people,dc=tld,dc=com: InvalidCredentialsError: Invalid Credentials

Could you please help me?