Pack Version:
1.2.2
Added mods: Spark for forge 1.12.2, build 165

Description:
As in the title, when you try to look up the recipe for the µI unit in JEI, the game crashes.

Expected Behavior:
Not crash.
Either do nothing or display something appropriate.

Steps To Reproduce:

1. Load a world (in my case, multiplayer, but that shouldn't matter)
2. Open inventory
3. Search for "infinity"
4. Click the µI icon to look up the recipe

Crash Log:
crash-2021-01-26_17.38.38-client.txt

Screenshots:
N/A

Unable to reproduce with the current JEC/EIO versions.

This crash actually seems to be from JEC rather than EnderIO:

java.lang.RuntimeException: Unrecognized ingredient type: class crazypants.enderio.base.integration.jei.energy.EnergyIngredient
	at me.towdium.jecalculation.data.label.ILabel$Converter.from(ILabel.java:245)
	at me.towdium.jecalculation.jei.JecaPlugin.getLabelUnderMouse(JecaPlugin.java:36)
	at me.towdium.jecalculation.gui.JecaGui.onMouse(JecaGui.java:108)

Did you have the crafting calculator open when this happened?

JEC 3.2.4 also notes in its change log that they fixed a crash when picking an unknown ingredient, so this particular issue may already be fixed.