site_name is incorrect. According to the checklist: The site_name property must include the correct name of the website. If the webmaster includes unnecessary data (e.g. ‘Site {sitename}’) or mixes the site name with the article title, "your template must take care of this".
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According to the checklist:
The site_name property must include the correct name of the website. If the webmaster includes unnecessary data (e.g. ‘Site {sitename}’) or mixes the site name with the article title, "your template must take care of this".