ConnectionError: Couldn't reach 'glue' on the Hub - Troubleshooting Guide

The error message 'ConnectionError: Couldn't reach 'glue' on the Hub' indicates that there was a problem connecting to a component named 'glue' on a hub. This could happen due to several factors, including network connectivity issues, incorrect configuration settings, or the component being unavailable or not running. Further investigation and troubleshooting may be necessary to pinpoint the exact cause of the error and fix it.