Problem starting the game after installing mods (The Witcher 3: Wild Hunt)

Good day people. I downloaded several mods, installed them, and the game, as a result, simply does not start, giving out this wonderful window. I have already downloaded some fixes, and deleted files with folders according to different guides, no result, why are these things, it's so difficult to put the mods so that they would work, I'm already suffering for the third day, I find the same thing: fixes that are nothing Do not do any advice on deleting some kind of files, the sense of all this is zero, the last hope of the people to ask.