emacs error Failed to verify signature archive-contents.sig

First time to install emacs.
when I try to run M-x package-refresh-contents

I had the following message.

Failed to verify signature archive-contents.sig:
No public key for 645357D2883A0966 created at 2024-12-12T07:05:06+0900 using EDDSA
Command output:
gpg: Signature made Thu Dec 12 07:05:06 2024 JST
gpg:                using EDDSA key 0327BE68D64D9A1A66859F15645357D2883A0966
gpg: Can't check signature: No public key

after some searching I try this and solved

gpg --homedir ~/.emacs.d/elpa/gnupg --receive-keys 645357D2883A0966