The following signatures were invalid

Hi with all. I have this problem when i intented update in debian:
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://artifacts.chirpstack.io/packages/3.x/deb stable InRelease: The following signatures were invalid: EXPKEYSIG CFF064C9D12ECB34 Orne Brocaar info@brocaar.com

Whatโ€™s the meaning of EXPKEYSIG, and this affects to the communication between the app-server and the node?

Please see Unable to locate package chipstack-gateway-bridge [Key EXPIRED] for the solution :slight_smile: (the key was renewed, you need to pull the update).

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