can't create Premium Music Library

i select premium music library but after creation nothing, plex mix, video clip, nada.
i have a plex pass and the server is signed,
at first it was ok but now nothing, Is there a possibility to know why this does not work with plex logs

when i want to modify

i can’t change the language too

yesterday i updated to Server 1.3.0. now the Music premium Agent is disappeared. do you have Server Version 1.3.0?

yes, but I have this problem for a few months even with the previous versions
i can choose premium but nothing when the library was created

@markusvitz said:
yesterday i updated to Server 1.3.0. now the Music premium Agent is disappeared. do you have Server Version 1.3.0?

i downgrad to Version 1.2.7.now it works again