Running kati to generate build-lineage_nx505j.ninja...
No need to regenerate ninja file
Starting build with ninja
ninja: Entering directory `.'
ninja: error: 'system/extras/su/superuser.rc', needed by '/home/syai2012/rom/los/out/target/product/nx505j/system/etc/init/superuser.rc', missing and no known rule to make it
build/core/ninja.mk:151: recipe for target 'ninja_wrapper' failed
make: *** [ninja_wrapper] Error 1
Why?