protractor sets error without opening browser - protractor

Question

i download a new ionic project and i am trying to test the header contains these elements ""
my config file is
exports.config = {
framework: 'jasmine2',
seleniumAddress: 'http://localhost:4444/wd/hub',
specs: ['../www/head.spec.js'],
multiCapabilities: [
{
browserName: 'chrome'
}]
}
named this as e2e.js
my test case file is
describe('header Module', function(){
var header;
beforeEach(function() {
header = element(by.css('title'));
});
it('should check title text',function(){
expect(header.getText()).toContain('Ionic Blank Starter');
});
});
and i named this as head.spec.js
my issue is that i could see the browser opened and my protractor sends an error msg
empresss-Mac-mini:myApp admin$ protractor test/e2e.js
Using the selenium server at http://localhost:4444/wd/hub
[launcher] Running 1 instances of WebDriver
/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/http/index.js:172
callback(new Error(message));
^
Error: ECONNREFUSED connect ECONNREFUSED 127.0.0.1:4444
at ClientRequest. (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/http/index.js:172:16)
at emitOne (events.js:77:13)
at ClientRequest.emit (events.js:169:7)
at Socket.socketErrorListener (_http_client.js:259:9)
at emitOne (events.js:77:13)
at Socket.emit (events.js:169:7)
at emitErrorNT (net.js:1253:8)
at doNTCallback2 (node.js:439:9)
at process.tickCallback (node.js:353:17)
From: Task: WebDriver.createSession()
at Function.webdriver.WebDriver.acquireSession (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:157:22)
at Function.webdriver.WebDriver.createSession (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:131:30)
at [object Object].Builder.build (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/builder.js:445:22)
at [object Object].DriverProvider.getNewDriver (/usr/local/lib/node_modules/protractor/lib/driverProviders/driverProvider.js:38:7)
at [object Object].Runner.createBrowser (/usr/local/lib/node_modules/protractor/lib/runner.js:182:37)
at /usr/local/lib/node_modules/protractor/lib/runner.js:263:21
at _fulfilled (/usr/local/lib/node_modules/protractor/node_modules/q/q.js:797:54)
at self.promiseDispatch.done (/usr/local/lib/node_modules/protractor/node_modules/q/q.js:826:30)
at Promise.promise.promiseDispatch (/usr/local/lib/node_modules/protractor/node_modules/q/q.js:759:13)
at /usr/local/lib/node_modules/protractor/node_modules/q/q.js:525:49
[launcher] Process exited with error code 1
could someone help to fix this issue
when i try to webdriver-manager update err msg is displayed
empresss-Mac-mini:~ admin$ webdriver-manager update
fs.js:799
return binding.mkdir(pathModule._makeLong(path),
^
Error: EACCES: permission denied, mkdir '/usr/local/lib/node_modules/protractor/selenium'
at Error (native)
at Object.fs.mkdirSync (fs.js:799:18)
at Object.<anonymous> (/usr/local/lib/node_modules/protractor/bin/webdriver-manager:126:6)
at Module._compile (module.js:435:26)
at Object.Module._extensions..js (module.js:442:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Function.Module.runMain (module.js:467:10)
at startup (node.js:134:18)
at node.js:961:3
empresss-Mac-mini:~ admin$