The game crashed whilst rendering block entity
Error: java.lang.ClassCastException: cjminecraft.doubleslabs.common.tileentity.SlabTileEntity cannot be cast to io.github.tehstoneman.betterstorage.common.tileentity.TileEntityTank
crash.txt

Hi there! Apologies for the delayed response, had a really hectic year at university. I just wondered how you were able to create this error?