All users including administrator's account suddenly disappeared in Settings > User and Contacts but I still can login as Administrator, I didn't do anything in the system.
Here's my Settings, there is no users at all: https://snipboard.io/73qArR.jpg
But I can still login as Administrator and can access all in my main menu but I can't create a user in Contacts and Settings, I'm not sure if all internal/portal users were still there, I tried to filter Inactive Users but still no users has found. How to solve this?