Should you ever have issues with your GraphQL application and need to troubleshoot or suspect you are facing a bug you may need to gather further traces.

To enable GraphQL debugging traces, please proceed as described here. 

Remember that for connectivity issues, the javascript driver debugging can be toggled using these steps . 

Note: It is important to consider that when dealing with Neo4j support you can report issues regarding using the official GraphQL library but for the community led GraphQL library  (not actively supported) you should only consider reporting issues in the community.