Issue description:

Server crash on loading with log :
[Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: Encountered an unexpected exception
java.lang.NoClassDefFoundError: com/raoulvdberge/refinedstorage/api/storage/disk/IStorageDiskProvider

Version (make sure you are on the latest version before reporting):

• Minecraft: 1.15.2
• Forge: 31.2.20
• Refined Storage: 1.8.5

I'm guessing this is caused by ExtraDisks. But I don't know for sure without a crash report.

All add-ons need to be updated to work with 1.8.5.

you're right
thank you