gcloud apps logs tail returns Internal Error. Logs GUI returns unknown error

I'm working on a project on Google App Engine and gcloud app logs tail stopped returning logs several hours ago. Currently, when I enter the command, I get Waiting for new log entries... for about a minute before it times out and returns INTERNAL: Internal error encountered. If I try accessing or querying logs through the Google Cloud console, there is a Unknown Error has occurred notification. It appears the server-side scripts are still working, as I can access the internal site running on App Engine just fine.

It does not appear that there is a service-level issue right now, but I need to see the logs as part of making sure my updates to the server-side code are running properly. Please advise how I should approach this.

There's an issue now in Google Cloud Logging, please visit the Google Cloud dashboard see the yellow banner at the top:

Cloud Logging delays on log ingestion in the us-central1 region and 25% of the global region. Projects in us-central1 may experience failures running queries.

Google Cloud Engineering team is working on solving this issue. If there is no yellow banner, it should be completely fixed.