(Edit: made the instructions clearer. hopefully.)
Same here - downgrading back to Vesta 2.0.1 fixes it. Upgrading back to 2.0.2 brings back the error. I think I may have found a fix. Making this change makes the game start.
To other players: I DO NOT KNOW IF THIS WILL BREAK YOUR SAVE!!! I've never done any modding or lua. All I tested is that the game starts! If you wanna try my fix, be sure to save your game under a new filename.
So, the fix appears to be to edit the file "migrations/2.0.2.json" in the mod archive (extract the zip of this mod into your mod folder, then delete the archive, then edit the file) to this (starting with "{", ending with "}", and inclusive of the curly brackets):
{
"entity":
[
["vesta_combustion_furnace", "vesta-combustion-furnace"],
["vesta_electrolyzer", "vesta-electrolyzer"]
]
}