The resource pack "Better Vanilla Building" doesn't show up. The logs repeatedly say [17:41:46] [Render thread/WARN]: [recursiveresources] Failed to determine source folder for pack: file/BetterVanillaBuildingV3.0.zip, unknown pack type: net.minecraft.class_8614 when in the resource pack selection screen.

I can't tell how to even begin troubleshooting this properly so I'm making this issue right after the log discovery.

for context i'm using recursive resources version 2.5.3 for minecraft 1.21 and fabric version 0.15.11 (API version 0.100.6)