Hi all, I have recently tried to install some system packages, but ive gotten this message:
**Invalid package file:**
**package crystal-1.10.1-2.1.x86_64 cannot be verified and repo crystal is GPG enabled: /var/cache/PackageKit/38/metadata/crystal-38-x86_64/packages/crystal-1.10.1-2.1.x86_64.rpm could not be verified. /var/cache/PackageKit/38/metadata/crystal-38-x86_64/packages/crystal-1.10.1-2.1.x86_64.rpm: Verifying a signature using certificate 321DC2EA7F0A4F06714516B8E456AE72856D1476 (devel:languages:crystal OBS Project <devel:languages:crystal@build.opensuse.org>): 1. Certificiate E456AE72856D1476 invalid: certificate is not alive because: The primary key is not live because: Expired on 2023-07-08T13:07:32Z 2. Key E456AE72856D1476 invalid: key is not alive because: The primary key is not live because: Expired on 2023-07-08T13:07:32Z: Verifying a signature using certificate 321DC2EA7F0A4F06714516B8E456AE72856D1476 (devel:languages:crystal OBS Project <devel:languages:crystal@build.opensuse.org>): 1. Certificiate E456AE72856D1476 invalid: certificate is not alive because: The primary key is not live because: Expired on 2023-07-08T13:07:32Z 2. Key E456AE72856D1476 invalid: key is not alive because: The primary key is not live because: Expired on 2023-07-08T13:07:32Z: digest: SIGNATURE: NOT OK**
How can I fix this issue, & what does this issue mean as well so I have a better understanding on how to fix it myself next time?