@bbm:
1. That error of incomplete import is not an issue. It’s just that due to WooCommerce plugin which is optional.
2. CSS comparison issue is due to the CSS coming from WP Travel Plugin. To fix this either you need to remove the CSS from the plugin or add the following CSS in “Appearance => Customize => Additional CSS” box:

.slick-prev::before,
.slick-next::before {
    display: none;
}
.section-trips-carousel .slick-prev.slick-arrow {
    left: auto;
}