Looks like an error about schedules, possibly an entry that has the same time twice. There are a lot of mods in this log, so it would probably be fastest to just throw a bunch of them into a .disabled folder and see if it still happens.
You should keep core frameworks (Content Patcher, PyTK, etc) enabled, since they are both unlikely to be causing the issue directly, and also turning them off will turn off a great many of your mods at once :D