This might be because I have two mods that are very similar.
#Everest crashes after downloading my mod
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these are Olympus logs, is Olympus or Everest the one that crashes?
It was Olympus
You have an InvalidDataException, which I think calls for opening your mod folder and deleting any corrupt mod zip (if you can't identify it, open manage installed mods in olympus if you can, and the list should be cut off before the end of the alphabet, indicating the last mod before the corrupt one alphabetically)
I don't think there are any corrupt mods, this happened when I installed a mod.
Consequently, the installed mod is probably corrupt