“Created Time” is 1970-01-01 00:00

Hello, I have some problems with the Backblaze B2 remote storage: if I go in administration > site Backup > Manage Backups the “Created Time” reported is always 1970-01-01 00:0; I have this problem only with the remote storage, the same files on the local storage have the correct date.

I tried on a VPS and on a shared hosting and the problem is present on both.