• After installing SpamReferrer Block I got the message like “Cannot activate plugin because it causes a fatal error”

    The second try was successful but on top of the plugins page I now got the message
    “The following plugins might cause (open graph) issues with Yoast WordPress SEO: Facebook”

    Any idea?

    Thank you
    Klaus

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

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