In some cases autoptimize JS scripts will be cached in Google and return 404 results if the autoptimize cache has been cleared. To get around that problem this piece of code returns a HTTP 410 Gone for all those scripts that return a 404 because they have been cleared from the Autoptimize cache.

functions.php

<?php

add_action( 'template_redirect', 'yanco_404_redirect_to_410_for_autoptimize' );
function yanco_404_redirect_to_410_for_autoptimize() {
    if( is_404() ) {
        
        $search = 'cache/autoptimize/js/autoptimize_';
        if( strpos( $_SERVER['REQUEST_URI'], $search ) !== false ) {
            wp_redirect( $_SERVER['REQUEST_URI'], 410 );
            exit;
        }
    }
}