Handle null in the html.html.twig template

[fritzmg]

tl_content.html is nullable and thus the following error can occur:

TypeError:
Contao\CoreBundle\Twig\Runtime\InsertTagRuntime::replaceInsertTags(): Argument #1 ($text) must be of type string, null given, called in var\cache\dev\twig\d3\d3515c7374c86e1675c9bdc71501583c.php on line 95

  at vendor\contao\contao\core-bundle\src\Twig\Runtime\InsertTagRuntime.php:33
  at Contao\CoreBundle\Twig\Runtime\InsertTagRuntime->replaceInsertTags(null)
     (var\cache\dev\twig\d3\d3515c7374c86e1675c9bdc71501583c.php:95)
  at __TwigTemplate_ec9b51ce37f7fdfbb114fb5f8d792795->block_html(array('type' => 'html', 'template' => 'content_element/html', … 

[m-vo]

Should the controller even render the template in this case or just return an empty response (like in the markdown controller)? 🤔

[fritzmg]

Should the controller even render the template

Yes, because the template could contain other things.

[leofeyer]

Thank you @fritzmg.