Crash when selecting a machine with a parameter

[alexkaratarakis]

Hey, encountered a crash when selecting a machine with a parameter.
Repro Steps:

1. Create Assembler with a Parameterized recipe
2. Select analysis zone containing it.

This error pops up:

The mod Assembly Analyst (2.0.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event assemblyanalyst::on_tick (ID 0)
__assemblyanalyst__/scripts/handlers.lua:105: attempt to perform arithmetic on field '?' (a nil value)
stack traceback:
	__assemblyanalyst__/scripts/handlers.lua:105: in function <__assemblyanalyst__/scripts/handlers.lua:87>

Factorio 2.0.65 on linux.