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I have this error show up in my error_log.

PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'wp_force_remove_style' not found or invalid function name in wp-includes/class-wp-hook.php on line 287

I will appreciate your advice as to how to fix this.

Thank you.

1 Answer 1

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You have an action, but not the valid callback for your action.

For example,

You have somewhere following line:

add_action( 'some_action', 'wp_force_remove_style' );

But not have "wp_force_remove_style" function defined.

You have to have a function as following:

function wp_force_remove_style() {
    // Do you stuff.
}

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