The error message “Internal Server Error com.netflix.zuul.exception.ZuulException Forwarding error” indicates that there was an issue with a reverse proxy called Zuul. This error is usually encountered when a client request to the server is failing to reach its intended destination, and is being sent back with an error message by Zuul.

This error can be caused by a number of issues such as an incorrect route configuration, a network failure, or a failure of the destination service to respond. To resolve this error, it’s necessary to dig deeper into the root cause by examining the logs, network traces, and configurations.