Ebuild 0 has a missing or malformed copyright/licensing header.
[Notice] Ebuild 0 has an invalid header. It should start with a valid copyright line (e.g., '# Copyright YEARS MAIN-CONTRIBUTOR') and the GPLv2 distribution text followed by an empty line.
[Notice] Package has only unstable keywords for arch(es): [ amd64, arm64 ], all versions are unstable: [ 0 ]