I’ve used Advanced Custom Fields previously with the same theme without issue. I just installed it on another site and attempted to create a New Field Group. I was successful. That was simply naming the group. No additional changes.
So then I hit Edit and attempted to Add Field when I hit Publish, it goes to a white screen and does not save the new Field(s) added to the group.
So then I deleted the group and attempted to redo it and got a white screen on Publish.
I deleted and reinstalled the plugin, but the plugins stuff is still in the database.