title: Not able to start appium session
body: <p>I am not able to start the session can you help. I have done the following steps:</p>
  
  <ol>
  <li><p>Started a Appium server from Appium for windows package (ran appium.exe file)</p></li>
  <li><p>Started a simulator for android</p></li>
  <li><p>Started selenium server</p></li>
  <li><p>Ran the script via TestNG</p></li>
  </ol>
  
  <p>I am getting the following error when I enter the follwing in the browser</p>
  
  <pre><code>127.0.0.1:4723/wd/hub:
  That URL did not map to a valid JSONWP resource
  </code></pre>
  
  <p>My console shows the following error:</p>
  
  <pre><code>A new session could not be created. (Original error: Requested a new session but one was in progress) (WARNING: The server did not provide any stacktrace information)
  Command duration or timeout: 306 milliseconds
  </code></pre>