Cannot view groups

Hi, i can’t view groups and users because Pydio shows “Call to a member function format() on null”

How can i resolve this?

Informations:
Mysql: 10.1.48-MariaDB
Php: 7.2
OS: Ubuntu 20.04
Pydio: 8.2.5

sorry to be harsh but : just do not use Pydio 8 anymore, it’s end-of-life and not supported.