When I start any modpack it says i need to have a specific file to run it and i dont know what to do. I'll put a screenshot as an example below.
Idk if the picture i took showed up btw so here https://gyazo.com/f91015fe97173ab90797608b0d49ccc4
Oh, well now its not saying anything but its just not loading
https://gyazo.com/9c216a9f728258258f3ab97b8a69bbcd