Steps to reproduce:

1. Launch the game with output enabled and create/open a world
2. Place a chest down and stand on it
3. Run

   /data merge block ~ ~ ~ {Items:[{Slot:0b,id:"minecraft:air",Count:1b}]}

4. Switch to the Minecraft game output window

Observed result:
A Tried to load invalid item: 'Item must not be minecraft:air' error is generated.

Expected result:
No error is generated.