This template doesn't exist (yet) in the core bundle. Also, it would be better to avoid overrriding templates from the *app/Resources* folder -- it has been emptied recently -- as it's outside of the vendor directory and therefore not handled by composer updates. I don't know if there's really another way, but we could consider adding this special case to the template locator defined in the core bundle (https://github.com/claroline/CoreBundle/blob/master/Library/Templating/Loader/TemplateLocator.php).