This update fixed Issue #112, where the Failed to clean up cached files error kept appearing in console. Apologies to everyone who was affected and had their consoles and logs flooded with error messages.
Additionally, I have made a resource pack that allows people to use this mod completely independently from Fabric API. Given Fabric API's resource loader is responsible for loading modded resources; If you do not have Fabric API installed, you may instead download and apply the resource pack I made, effectively allowing you to use this mod properly without Fabric API.
The resource pack file is called bss_rp-3.9.3+1.20.4.zip, and can be downloaded on the GitHub Releases page. It works on all 1.20.X versions as well, so feel free to ignore any "incompatibility" warnings the game shows you.