Issue type:

• 🐛 Bug

Short description:

Crashes if an empty item list is used in a recipe variable on the input side.
Not quite sure how to describe it.
Came across it while making a chest + materializer based recipe variable making system.

Steps to reproduce the problem:

1. make an ingredients variable with one empty item
   
2. make an empty list variable
   
3. make a second ingredients variable with Ingr.with_items using previously made variables
   
4. make a recipe variable with Recipe.with_io using second ingredients variable in first (input) slot and first ingredients variable in second (output) slot
   
5. put the first three variables in a variable store
   
6. put the recipe variable in a display panel connected to the variable store
   
7. crash

Expected behaviour:

Not to crash. Recipe could show up as a red X or empty.

Versions:

• Integrated Dynamics: IntegratedDynamics-1.18.2-1.11.3
• Integrated Terminals: IntegratedTerminals-1.18.2-1.3.0
• Integrated Tunnels: IntegratedTunnels-1.18.2-1.8.12
• Integrated Crafting: IntegratedCrafting-1.18.2-1.0.23
• CyclopsCore: IntegratedCrafting-1.18.2-1.0.23
• CommonCapabilities: CommonCapabilities-1.18.2-2.8.2
• Minecraft: 1.18.2
• Forge: 40.1.51

Log file:

https://pastebin.com/415YCA52

Thanks for reporting!