title: TYPO3 8.7 - why is my typeNum page empty?
body: <p>I have been stuck on this for about a day now. I recently upgraded from 7.6 to 8.7, and my Ajax feature no longer works. The problem: the page that I generate to host my plugin for the Ajax call is empty (always).</p>
  
  <p>Here is the code that I use to generate the page:</p>
  
  <pre><code>ajaxselectlist_page = PAGE
  ajaxselectlist_page {
      typeNum = 427590
  
      config {
          disableAllHeaderCode = 1
          additionalHeaders = Content-type:application/html
          xhtml_cleaning = 0
          debug = 0
          no_cache = 1
          admPanel = 0
      }
  
      10 &lt; tt_content.list.20.extension_controller
  }
  </code></pre>
  
  <p>I have tested it, and the problem seems to be with the plugin generation, as I have no problem generating generic text on the page.</p>
  
  <p>I did manage to get it working very briefly using the following code instead, though even this returned empty as soon as I made my first Ajax call.</p>
  
  <pre><code>10 = USER
  10 {
      userFunc = TYPO3\CMS\Extbase\Core\Bootstrap-&gt;getInstance
      vendorName = HarryLaForge
      extensionName = Inventory
      pluginName = Item
      controller = Item
  }
  </code></pre>
  
  <p>One other point of information: when I updated to 8.7 I also removed the boostrap_package from my installation in lieu of simply creating my own templates. I don't think that this should have caused the problem, but I thought I would mention it none-the-less.</p>
  
  <p>Thanks a million!</p>