Occasional "read timeout in contents" or "read timeout in resources" notifications

I'm occasionally getting notifications like this on Keybase for macOS:

Is this something weird with my internet connection (e.g. could be something blocked by corporate firewall), or is this a bug in the client, or on your side?

my log id: 88736aebbd9c0794f11c1e1c

Start by examining the macOS client behavior associated with the reported “read timeout in contents” and “read timeout in resources” notifications, using log id 88736aebbd9c0794f11c1e1c. Reproduce or trace the timeout and determine whether it originates from the client, the network, or the service; done means the cause is identified and the appropriate fix or diagnostic is verified.

Written by the indexing model from the issue text.