User management failed update

I want to configure my user management but when I make changes in management page, it says user management update has failed.

You must enter the purpose of collection.

yeah, i figured that out…

{“access_token”:“8r2AEjpz_YAVLCzIGADkYIc_mXIc67TdNosJ7AopdkgAAAFftC9VoQ”,“token_type”:“bearer”,“refresh_token”:“nKb2vjVinnEpl4ny_kXAEon3Blx-_VuESJ1aqgopdkgAAAFftC9Vmw”,“expires_in”:7199,“scope”:“profile”}

This is a successful response.
(access_token, token_type, refresh_token, expiresin, scope)