The following error occurred when clicking something in factoriopedia. I tried replicating it without success - it normally displays floating text which says something like "This recipe cannot be crafted by hand."

The mod Crafting Queue Enhancements (0.0.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event crafting-queue-enhancements::cqe-craft-all (ID 227)
No manual crafter.
stack traceback:
[C]: in function 'get_craftable_count'
crafting-queue-enhancements/control.lua:67: in function <crafting-queue-enhancements/control.lua:58>

It happened again and this time I can replicate it. This time, it happened in editor mode within a blueprint sandbox (with the full isolation setting) when attempting to use the recipe book hotkey to open an entry for various unresearched items/recipes.

For posterity sake, the issue seems to be that I had the same hotkey for opening recipe book as I did for queuing crafts. Changing the hotkey prevents the error from occurring again.