Fix broken Query Monintor in WC Marketplace seller panel

functions.php

<?php

add_action( 'wp_enqueue_scripts', function(){
    wp_enqueue_style(
        'query-monitor',
        QueryMonitor::init()->plugin_url( "assets/query-monitor.css" ),
        [],
        QueryMonitor::init()->plugin_ver( "assets/query-monitor.css" )
    );
}, PHP_INT_MAX );