It’s unclear which screenshot this means. Is that the one supplied with that post or some other one?
First screenshot (with date 2019-10-28)
So it happened by itself before any of the many repair options tried?
yes, by itself
Was that a scheduled backup?
yes
list-broken-fileswasn’t tried that I hear, but it probably won’t like a completely empty database.
was tried, result below:
Server logs show no additional info: despite “fatal error”. Probably I will delete this task and all data and will start from scratch.