How to use Neo4J bolt server with TLS behind Nginx reverse proxy?

Hello! I have complex but not so loaded ecosystem so I have to use one FreeBSD VM with processes under different URI. Because of https in front of Nginx I was asked to generate SSL RSA certificates for Neo4j. I have Nginx reverse proxy from /neo4j/ to browser but when I am trying to connect to bolt+s://mydomain.com:7687 it shows "ServiceUnavailable: WebSocket connection failure. Due to security constraints in your web browser, the reason for the failure is not available to this Neo4j Driver. Please use your browsers development console to determine the root cause of the failure. Common reasons include the database being unavailable, using..." error. What can it mean?