As reported FxMorin/MoreCulling#217, the game crashes if Reset Cache in it's config ui is clicked with modernfix 5.12.0 and MoreCulling 0.21.0
Logs: https://mclo.gs/Rnu8p53

Fixed by Moreculling in https://modrinth.com/mod/moreculling/version/0.22.0-1.20.1+