How to customize the critical error message?

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How to customize the critical error message saying:

There has been a critical error on your website.

Learn more about debugging in WordPress.

Instead of using CSS to hide the message it would be interesting to be able to point the link to another source than the community article.

How to customize the critical error message saying:

There has been a critical error on your website.

Learn more about debugging in WordPress.

Instead of using CSS to hide the message it would be interesting to be able to point the link to another source than the community article.

• fatal-error
• errors
• wp-error

Share Improve this question asked Jul 9, 2020 at 12:23 RafaSashiRafaSashi 50711 gold badge77 silver badges1717 bronze badges

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1 Answer 1

Sorted by: Reset to default 3

You can use the wp_php_error_message filter to customise this message:

add_filter(
    'wp_php_error_message',
    function( $message, $error ) {
        return 'My custom message.';
    },
    10,
    2
);

I haven't tested to be sure, but I would assume that if the critical error that causes this message happens to be in the code of same theme or plugin that this filter is used in, or a theme or plugin loaded before it, then this filter would likely not apply.

If you want to change this message independently of your theme and plugins, this might be a good use case for a Must Use Plugin.

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