Getting double arrows on your testimonial slider?

Are you getting double arrows (like the below image)on the Divi Testimonial Extended slider?

Please use the following CSS snippet on the Page or the Divi Theme Options Custom CSS area.

.el_md_testimonial_extended .swiper-button-next,
.el_md_testimonial_extended .swiper-button-prev {
    background-image: none;
}