Keycloack join failed after reinstallation adn UCS uprade

Hi, on UCS 5.2 executing keycloack join script I’ve this error:

  File "/usr/sbin/univention-keycloak", line 308, in __init__
    KeycloakAdmin.__init__(
  File "/usr/lib/python3/dist-packages/keycloak/keycloak_admin.py", line 139, in __init__
    self.connection = connection or KeycloakOpenIDConnection(
                                    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/keycloak/openid_connection.py", line 117, in __init__
    self.get_token()
  File "/usr/lib/python3/dist-packages/keycloak/openid_connection.py", line 306, in get_token
    self.token = self.keycloak_openid.token(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/keycloak/keycloak_openid.py", line 314, in token
    return raise_error_from_response(data_raw, KeycloakPostError)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/keycloak/exceptions.py", line 192, in raise_error_from_response
    raise error(
keycloak.exceptions.KeycloakPostError: 400: b'{"error":"invalid_grant","error_description":"Account is not fully set up"}'
ERROR: Container did not come up healthy
/usr/lib/univention-install/50keycloak.inst: FATAL: 

How can I fit it?
Thank you