That's not the tooangel's mod, I have the same problem with my IA and I started a month ago so it is a little IA... I googled it, that's why I'm here.
Maybe linked to swap, but I have one.
My server worked more than 12 hours before it happens. I think it always happened while I was online but I'm not sure.
btw, your github is very nice to read tooangel, thank you for the share.