How to create any code from google spreadsheet like {.label} by Craft CMS
You need to use valid html/twig in your templates. Your “HTML Source Code” is not valid html. Removing the . from the beginning of your attributes i.e.: &lt;span ex:content="genre"&gt; should resolve the error, but it still wont be good html.

Best option, IMHO, is to start with a good solid foundation of valid html and work up from there.