Webdriver.io - can not get firefox to run - selenium

Question

I am trying to get firefox to run in webdriver.io 5. This is on a Linux cloud.
I get:
2020-02-28T02:32:33.472Z INFO #wdio/cli:launcher: Run onPrepare hook
2020-02-28T02:32:33.475Z INFO #wdio/local-runner: Start worker 0-0 with arg: wdio.conf.js
[0-0] 2020-02-28T02:32:33.818Z INFO #wdio/local-runner: Run worker command: run
[0-0] RUNNING in firefox - /build/main.js
[0-0] 2020-02-28T02:32:33.881Z INFO webdriverio: Initiate new session using the webdriver protocol
[0-0] 2020-02-28T02:32:33.883Z INFO webdriver: [POST] http://127.0.0.1:4444/session
[0-0] 2020-02-28T02:32:33.883Z INFO webdriver: DATA {
capabilities: {
alwaysMatch: { browserName: 'firefox', 'moz:firefoxOptions': [Object] },
firstMatch: [ {} ]
},
desiredCapabilities: { browserName: 'firefox', 'moz:firefoxOptions': { args: [Array] } }
}
[0-0] 2020-02-28T02:32:33.899Z WARN webdriver: Request failed due to connect ECONNREFUSED 127.0.0.1:4444
[0-0] 2020-02-28T02:32:33.899Z INFO webdriver: Retrying 1/3
Here is my config:
exports.config = {
runner: 'local',
path: '/',
specs: [
'./build/**/*.js'
],
maxInstances: 10,
capabilities: [
{
"browserName": "firefox",
"moz:firefoxOptions": {
"args": ["-headless"],
}
}
],
logLevel: 'info',
bail: 0,
baseUrl: 'http://localhost',
waitforTimeout: 10000,
connectionRetryTimeout: 90000,
connectionRetryCount: 3,
reporters: ['spec'],
framework: 'mocha',
mochaOpts: {
ui: 'bdd',
timeout: 60000
},
services: [
],
}```
Any ideas what I am doing wrong?

Answer 1

The path should be set to path: "/wd/hub" and your services seems to be empty. You can use webdriverio with mocha in two different ways. With selenium or without.
Please refer to boiler plates from official docs here

Answer 2

[0-0] 2020-02-28T02:32:33.899Z WARN webdriver: Request failed due to connect ECONNREFUSED 127.0.0.1:4444
If you are using selenium-standalone, please make sure that you have both the java jdk & sdk installed on your machine. let me know if this worked for you.