• I’ve just noticed this in my debug log, any ideas how I can best troubleshoot?

    [09-Feb-2018 09:40:46 UTC] PHP Fatal error: Call to undefined function submit_button() in /wp-admin/includes/file.php on line 1767

    thanks in advance

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  • Hi @danking84,

    This may be a plugin or theme conflict. Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.
    If you can install plugins, install “Health Check”: https://ww.wp.xz.cn/plugins/health-check/ On the troubleshooting tab, you can click the button to disable all plugins and change the theme for you, while you’re still logged in, without affecting normal visitors to your site.

    Rajan V

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