Problem on Module 3, week 1 Graph Databases Lab

Getting Value Error on the Module 3, Week 1 assignment on Grapg Databases. When I run first query cell, I get: Cannot resolve address http:7687. http://ec2-3-80-219-90.compute-1.amazonaws.com:8888/lab/tree/C3_W1_Assignment.ipynb

Hello @chimexis,
you could try removing http:// from NEOJHOST then restart, just use the Neo4jDNSConnection from CloudFormation (no colon or port number). Thank you