• I get this AMP Validation error:

    Invalid attribute values: href=https://domain.com/wp-content/plugins/sitepress-multilingual-cms/res/css/language-selector.css?v=3.3.6

    related to WPML css file used for the language selector.
    Do I understand correctly that these inserted CSS files do not work well with AMP? Any ideas how this error can be solved?

    https://ww.wp.xz.cn/plugins/pagefrog/

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