I just first found the structure void block when I tried to give myself structure block with /give command when I was excited to see how the structure block works

I did test the structure void block and it works just fine on my player's inventory slots (it acts like a barrier except it doesn't affect any entities at all)

But when I decided to move it to the inventory (where you keep items instead of using them)

Yep, game crashes, this needs to be fixed