I'm using factorio 0.17.28 and mod version 1.2.1
When opening the game, from the launch icon, I receive an error using ONLY black market mod:
Failed to load mods: Error in assignID, tecnology with name 'electric-energy-accumulator-1' does not exist.
Source: black-market-energy (tecnology).
Mods to be disabled:
°BlackMarket

I get the same error...

It got updated, try going into the mod files and change "electric-energy-accumulator-1" to "electric-energy-accumulators"
As that is what the new technology is called in 0.17. I am trying it now and will get back to you.

OH you are a nice guy

The file to change is inside the zip file.
It's called "entities.lua" and is locate in the path (inside the zip file) "\BlackMarket_1.2.1\prototypes".
It work, but my call was for an official fix, because any instance of Factorio in my PC need it and I dont have a single factorio directory...
Having the official update is easier, for me and I think even for others.

Yes, the official update is easier, however the fix does work perfectly if anyone is wondering.