Function ‘markdown_script’ not found or invalid name in class-wp-hook.php

  • Resolved Eric P.

    (@codeep)


    7 years, 9 months ago

    Hi there,

    I recently upgraded my site from PHP 5.6.13 to PHP version 7.1.1, and found this warning on every wp-admin page showing at the top:

    Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'markdown_script' not found or invalid function name in /www/wp-includes/class-wp-hook.php on the line 298

    Since before the upgrade I’ve never encountered this error and everything worked just fine (WordPress 4.7.2 on PHP 5.6.13), I am wondering whether I configured & compiled something wrong or just the latest version of PHP doesn’t work well with WP 4.7.2 …

    Besides, Markdown translation still works (I installed “JP Markdown” plugin).

    Looking forward to a prompt support, thanks!

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