Installation script fails

[Unthread]

curl -fsS https://dlang.org/install.sh | bash -s dmd
Downloading https://dlang.org/d-keyring.gpg
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Downloading https://dlang.org/install.sh
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The latest version of this script was installed as 
~/dlang/install.sh.
It can be used it to install further D compilers.
Run `~/dlang/install.sh --help` for usage information.

Downloading and unpacking 
https://downloads.dlang.org/releases/2.x/2.111.0/dmd.2.111.0.linux.tar.xz
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gpg: Signature made Mon 31 Mar 2025 06:29:30 AM CDT
gpg:                using RSA key 
F3F896F3274BBD9BBBA59058710592E7FB7AF6CA
gpg: Can't check signature: No public key
Invalid signature 
https://downloads.dlang.org/releases/2.x/2.111.0/dmd.2.111.0.linux.tar.xz.sig