"Error 2", excuse me wtf am I supposed to do with this information?

downloaded linux kernel and tried to compile, installed all the shit required but noooo error 2 who the fck come up with this shit

Hello, did you know about signum network? I've been researching it for some time and it seems good, nothing wrong about it besides low popularity. It uses proof of capacity (where mining is reading special files from disk instead of using cpu or gpu). It has low transaction fees and overall looks like a good project. Do you know any particular reason why it's not more popular?