Errors

valid_signature

gpg: Signature made Thu 16 Apr 2026 05:31:57 PM JST
gpg:                using RSA key 72B3B1B25C0AD5EA05282C052A03F112362F6FD4
gpg: requesting key 2A03F112362F6FD4 from hkp server keyserver.ubuntu.com
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==