title: Nightwatch Unable to locate element using xpath
body: <p>I am new to Nightwatch and trying to write a simple test. I am getting the following error. </p>
  
  <pre><code>ERROR: Unable to locate element: "//label[data-id="CC"]" using: xpath
  
      let suite = {
    "Test 1.": function (client) {
      client.useXpath();
      page = client.page.configure.deviceProperties.default();
      page.navigate(); 
      page.waitForLoader();
    }, 
  
    "column selector": function(client){
  
      page
      .verify.containsText('//label[data-id="CC"]', 'CC')
  
      client.pause(100);
    }
  </code></pre>
  
  <p>I also have tried with </p>
  
  <pre><code>'label[data-id="CC"]'
  'label[@data-id="CC"]'
  </code></pre>
  
  <p>What am I doing wrong? Thanks in advance.  </p>
  
  <p>-dj</p>