title: Cannot send headers; headers already sent in /home/zk/public_html/lib/Zend/Cache/Backend/File.php, line 1
body: <blockquote>
    <p>Cannot send headers; headers already sent in /home/zk/public_html/lib/Zend/Cache/Backend/File.php, line 1</p>
  </blockquote>
  
  <p>Trace:</p>
  
  <pre><code>#0 /home/zk/public_html/lib/Zend/Controller/Response/Abstract.php(115): Zend_Controller_Response_Abstract-&gt;canSendHeaders(true)
  
  #1 /home/zk/public_html/app/code/core/Mage/Core/Model/App.php(1246): Zend_Controller_Response_Abstract-&gt;setHeader('Content-Type', 'text/html; char...')
  
  #2 /home/zk/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(80): Mage_Core_Model_App-&gt;getResponse()
  
  #3 /home/zk/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(202): Mage_Core_Controller_Varien_Front-&gt;getResponse()
  
  #4 /home/zk/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard-&gt;match(Object(Mage_Core_Controller_Request_Http))
  
  #5 /home/zk/public_html/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front-&gt;dispatch()
  
  #6 /home/zk/public_html/app/Mage.php(684): Mage_Core_Model_App-&gt;run(Array)
  
  #7 /home/zk/public_html/index.php(87): Mage::run('', 'store')
  
  #8 {main}
  </code></pre>
  
  <p>I am new to magento and can't find the error</p>