Swiper Navigation custom next and prev icon not working .It show default icon.

[kmt-igsdev]

<button className="swiper-button-next" onClick={()=>swiperRef.current.swiper.slideNext()}><TfiArrowCircleRight/></button> <button className="swiper-button-prev" onClick={()=>swiperRef.current.swiper.slidePrev()}><TfiArrowCircleLeft /></button>