One of my Schedules (to Gdrive) doesn't run all the backups all the time

I seem to be seeing this problem every couple of days and i’m not sure where to find the relevant logs to tell me what’s going on…

You can see the first 3 backups were fine… but it appears the last 2 didn’t even try to run…

This schedule kicks off at 23:00… my next schedule kicks off at 00:30… the 3rd job in the pictured schedule finished at 23:10 so it’s not like there’s an overlap of schedules… so i’m really not sure what’s going on…

Can anyone suggest what’s going on?

Edit : no email was received as it usually is. this is running on linux.

Edit 2 : thiink i might of found it… it’s running on a proxmox lxc container which at midnight it shutsdown and backs up… bit of an oversite on my part there… i’m guessing it’s shutting it down part way through the 4th backup job… .oops.