Same. And I’m waiting for Apple’s reply. Here’s how it’s happened. After using my MacBook Air 2020 for about one and half month, it’s unable to turn into sleep mode everytime I close it - it just turns off automatically. Visited a local apple store, told me to back up with time machine before handing the laptop to them for a repair. Then I did it with an old disk I had, which seemed completely fine at that time because I was told that time machine can be run on any disk that functions normally. The disk never had any problem before. I completed the time machine backup in the morning, brought it to the store in the afternoon and showed it to one of the staffs to confirm that I had the backup completed. The disk was working at that time. Then it took about an hour for them to reinstall the system. Right after they completed it, I tried to restore the backup from my disk, which was when the disk started to have problem and show the error code 49218. All my years of research, everything, is on that disk. I couldn’t have possibly imagined that just one day, or an hour, something could go wrong with the back up. lodged a complaint about apple engineering department and requested either apple recover my data for me or pays for data recovery through a third party. Currently waiting for Apple’s reply on whether the failure has connection with time machine or apple’s side.