title: Unable to start webdriver-manager on mac to test angular apps on protractor
body: <p>I am new to <a href="http://www.protractortest.org/#/" rel="nofollow noreferrer">protractor</a>. While starting the Selenium Server using <code>webdriver-manager</code> in <a href="http://www.protractortest.org/#/" rel="nofollow noreferrer">protractor</a> I am getting the following error</p>
  
  <pre><code> [19:32:29] I/start - java Dwebdriver.chrome.driver=/usr/local/lib/node_modules/protractor/node_modules/webdriver-manager/selenium/chromedriver_2.31 -Dwebdriver.gecko.driver=/usr/local/lib/node_modules/protractor/node_modules/webdriver-manager/selenium/geckodriver-v0.18.0 -jar /usr/local/lib/node_modules/protractor/node_modules/webdriver-manager/selenium/selenium-server-standalone-3.5.0.jar -port 4444
   [19:32:29] I/start - seleniumProcess.pid: 823 Error: Unable to access jarfile /usr/local/lib/node_modules/protractor/node_modules/webdriver-manager/selenium/selenium-server-standalone-3.5.0.jar
   [19:32:29] I/start - Selenium Standalone has exited with code 1 
   AgIwals-MacBook-Pro:angulartestingprotractor agiwal$ Error: Unable to access jarfile /usr/local/lib/node_modules/protractor/node_modules/webdriver-manager/selenium/selenium-server-standalone-3.5.0.jar
  </code></pre>
  
  <p>My <code>protractor</code> version is <code>5.1.2</code> and my <code>npm</code> version is <code>3.10.10</code>. Can somebody help me with this error?</p>