Here's the entry from the logs

7021.777 Error MainLoop.cpp:1142: Exception at tick 3287814: The mod Enhanced Map Colors caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Enhanced_Map_Colors::EMC-Hotkey (ID 139)
Enhanced_Map_Colors/gui.lua:60: attempt to index field 'bob-logistics-4' (a nil value)
stack traceback:
Enhanced_Map_Colors/gui.lua:60: in function 'legendDropdown'
Enhanced_Map_Colors/control.lua:66: in function <Enhanced_Map_Colors/control.lua:63>

Yeah, i clicked while having red belt in hand n and it crashed with the above error...

https://i.imgur.com/2IX5Qgm.png

clicking it even with nothing in hand causes the same error. running latest version of bob's logistics on 17.23,, disabled the EMC hotkey (search for it under options>controls then right click the keymap) for now (what does it do i haven't even used the hotkey ever before)

Hopefully the mod author will see this soon.

I'll look into it

Yep, I had the same error a few mins ago

https://i.imgur.com/B2rogUC.jpg

I asked Bob about this.
I asked:
"'bob-logistics-4' (a nil value)
Has this been changed to a new name?"

He says:
"I had to change it to just logistics-4 because of the 0.17.23 changes
Look at the changelog of logistics, warfare and power
It's on the portal now for those newly updated mods.
But also on the second post of the 0.17 general discussion topic"

Was this conversation on the forum somewhere? I'd like to reference it.

Posting here to confirm that if you change "bob-logistics-4" (line 60) and "bob-logistics-5" (line 67) in gui.lua to "logistics-4" and "logistics-5" (respectively), the error goes away.

It was in Discord.
https://i.imgur.com/AAAECqT.png

But the forum post he references at the end there is this one:
https://forums.factorio.com/viewtopic.php?f=51&t=64435#p394386

thank you for the info