When i open my world crash for crystal chest

The game crashed whilst ticking block entity
Error: java.lang.AbstractMethodError: Receiver class com.progwml6.ironchest.common.block.regular.entity.CrystalChestBlockEntity does not define or inherit an implementation of the resolved method 'abstract int getContainerSize()' of interface com.progwml6.ironchest.common.block.entity.ICrystalChest.
Código de error: -1

Duplicate of #93