Have a screenshot but this forum apparently makes it difficult to simply click and upload a picture. The error says:
Silent
System Updater * now
Failed to check for updates
An error occurred checking for the latest update. The update system will try again soon. Unable to resolve host "releases.grapheneos.org": no address associated with hostname
Never seen this issue before and my phone was always updating fine. I was out and about on a 5g+ network when this happened.