ERR_CONNECTION_REFUSED

[codinglobster]

with the configuration down below, everything looks just fine,but when I visit http://localhost:3001/, I only got **ERR_CONNECTION_REFUSED**, can anyone told me how to debug with it, a lot of thanks.

chrome-headless

rendora

local react project

configuration

listen:
    address: 0.0.0.0
    port: 3001
cache:
    type: redis
    timeout: 6000
    redis:
        address: localhost:6379
target:
    url: "http://127.0.0.1:3000" 
backend:
    url: "http://127.0.0.1:3000"
headless:
    waitAfterDOMLoad: 0
    internal:
      url: http://localhost:9222
output:
    minify: true
filters:
    userAgent:
        defaultPolicy: blacklist
        exceptions:
            keywords:
                - bot
                - slurp
                - bing
                - crawler
    paths:
        defaultPolicy: whitelist
        exceptions:
            prefix:
             - /users/