• Getting this error on my blog (blog.sentieo.com) after installing optimonk plugin.
    Error: “Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method OptiMonkAdmin::initStyleSheet() should not be called statically in /var/www/html/wordpress/wp-includes/plugin.php on line 525”

    Please advise.

    • This topic was modified 6 years, 2 months ago by anuragg02.

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