Error: GPG verification FAILED

[morington]

Fedora 38
Good afternoon, I receive an error when validating the key. Can you tell me why this is happening?

I do everything as described in the repository

....
Continue? [y/n]: y
Download packages:
[SKIPPED] librsvg2-tools-2.56.3-1.fc38.x86_64.rpm: Already downloaded
[SKIPPED] hardcode-tray-4.3.r246.g1d52b2c-121.1.noarch.rpm: Already downloaded
Hardcode-Tray (Fedora_38) 4.5 kB/s | 1.1 kB 00:00
Import GPG key 0x6F964FF6:
User ID: "home:SmartFinn OBS Project <home:SmartFinn@build.opensuse.org>"
Fingerprint: 1C53 DA14 5523 86F4 E329 7330 B3C0 397E 6F96 4FF6
Source: https://download.opensuse.org/repositories/home:/SmartFinn:/hardcode-tray/Fedora_38/repodata/repomd.xml.key
Continue? [y/n]: y
error: Certificate B3C0397E6F964FF6:
   The certificate is expired: The primary key is not live
Key import failure (code 2). Failing package: hardcode-tray-4.3.r246.g1d52b2c-121.1.noarch
  GPG keys are configured as: https://download.opensuse.org/repositories/home:/SmartFinn:/hardcode-tray/Fedora_38/repodata/repomd.xml.key
The downloaded packages were stored in cache until the next successful transaction.
You can remove cached packages by running "dnf clean packages".
Error: GPG verification FAILED
[morington@fedora yum.repos.d]$