When use a meta template phile does not check if the template actually exists. So it will throw an exception if it does not exist. I would rather it simply uses the default template if the meta template is not found.

I tweaked the Lib\Phile\Template\Twig.php

I think I can actually make this a plugin instead of modify core, but seems like core behavior to me.

Down at the bottom of the render function I added 2 lines:

    $template = ($this->page->getMeta()->get('template') !== null) ? $this->page->getMeta()->get('template') : 'index';

    // added these 2 lines
    // if template does not exist, use index.
    $usetemplate = THEMES_DIR . $this->settings['theme'].'\\'.$template.'.html';
    if (!file_exists($usetemplate)) { $template = 'index'; }

    $output = $twig->render($template .'.html', $twig_vars);