It’s quite a bad UX, but generally error 2 from make means the called program resulted into an error.

Usually this is accompanied with another error somewhere up the log. Multiple cores can make this a challenge to scan the log for however, so maybe try compiling without the -j argument, that should get the actual error closer to the end.

From my experience, it’s usually an outdated config for the kernel (like using a config for 5.1 while compiling 6.7) or a missing dependency. However the real error will be somewhere among the logs, who knows, maybe it’s a missing processor instruction (it’s really bad UX).