@yawns Yes, it was folder problem, my bad, I just wanted to have some order in it :)
Thank you guys for help!

For future mirrores with same problem, always put 3rd party modules in …/MagicMirror/modules (NOT in default) :)

Prague, Czech Republic

@Nik Hi, I had almost same problem, I solved it by installing nodejs and electron first before MM
used those links http://thisdavej.com/beginners-guide-to-installing-node-js-on-a-raspberry-pi/ - in 3/4 of page
and for electron I think I used this https://github.com/electron/electron-quick-start dont remember… sorry :/