I noticed another issue where the WebSocket connection failed constantly (pusher), but all the App Keys were configured correctly. #1 Replace The Missing Resource Let start with the basics first! 11 Methods to Fix ERR_CONNECTION_REFUSED 1. My app_url is http://localhost and I have Connection Refused error, instead of 404 that I see in #40 issue. Have a question about this project? issuing the request directly on the machine where tomcat/confluence was running using a SOCKS proxy over ssh). I came across these instructions on testing for (and disabling) mod_deflate. I still get the same error with npm run dev -- --host & protocol: 'ws'. Loading failed for the