Can't play the game, crashes mid-launch

Published on Friday, May 10, 2019 By An-Average-Meows In Sins of a Solar Empire

i cannot even launch my game through steam, i have to go to the folder and start the Dev .exe file to "start" it, i'm playing with the mod:

"Sins of a Galactic Empire" and when i start it i get this error:"Failed to find data file "RESEARCH_ARTIFACT_SUPPLY0.entity'. (SubPath = GameInfo)"

I've tried a clean install aswell

i've got no idea on how to fix this

please ghelp me