Hi!
I have a custom post type "drivers" which was created in 2019 with MetaBoxAIO. All data was filled, displays in frontend and everything was fine.
Now after some time when I want to edit a "driver" in the admin area, all the fields are blank. They still display properly in the frontend, but in the admin area all fields are empty.
What can cause this issue?
WP: 5.8.3
MB: 5.5.1
MB-AIO: 1.10.18