Hi,
the log show you use RimWorld 1.2.2753, the latest stable version.
But i just notice at last you use one mod (Medieval World (No Guns/Low Tech)) which is made for B18 and not for 1.2
So you should check your other mods too, if they are all for 1.2
But you have so many targeteversion/suported version error's i think you should either delete these mod's that give the error and reinstall them. At last jecstools don't give any error's at my side.
Then you should take care about all the other error's after rimworld start before you even load a safegame.
Better don't use mod's that give errors. They don't work correct anyway or you miss some features.
Disable all mods, then activate at small batches.
At this way you notice early when a mod throw out errors. Sometimes it is just because you miss to load a required mod before.
Don't use mod's that are made for 1.0 only or older version. Many 1.1 mods can be used at 1.2, but you should check the mod discussion first.
But i fear if you clear up that mess, your safegame no longer load/playable.