Errors

use_strict

CLASS

use_warnings

CLASS

valid_signature

gpg: Signature made Sat 23 Sep 2023 07:48:25 PM JST
gpg:                using RSA key 35ADBC3AF8355E845139D8965F3C0261CDB2E752
gpg: requesting key 5F3C0261CDB2E752 from hkp server keyserver.ubuntu.com
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==