Errors

valid_signature

gpg: Signature made Sat 06 May 2023 07:18:24 PM JST
gpg:                using RSA key 788C2AECF7F27F1B6CB2BE671E65AB7181830BAC
gpg: requesting key 1E65AB7181830BAC from hkp server keyserver.ubuntu.com
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==