Uncaught ReferenceError: swiper is not defined at <anonymous>:1:1

Uncaught ReferenceError: swiper is not defined at <anonymous>:1:1

혹시 이 에러는 어떻게 해결해야 할까요??

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$(document).ready(function(){

//아래 소스는 오토슬라이드, 페이드효과  
var swiper = new Swiper('.swiper-container-main', {
  speed: 1000,
  /*페이드의 duration*/
  spaceBetween: 0,
  effect: 'fade', //메인 화면의 전환 효과설정입니다. fade와 scroll 둘중에 선택해주세요

  loop: true,
  autoplay: {
    delay: 500, //메인 화면의 fadein되는 초입니다. 1000 = 1초입니다.
    disableOnInteraction: false,
  },
  pagination: {
    el: '.swiper-pagination-main',
    clickable: true,
  },
  navigation: {
    nextEl: '.swiper-button-next-main',
    prevEl: '.swiper-button-prev-main',
  },
});

//아래 소스는 오토슬라이드, 페이드효과  
var swiper2 = new Swiper('.swiper-container-topbanner', {
  speed: 1000,
  /*페이드의 duration*/
  spaceBetween: 0,
  effect: 'slide', //메인 화면의 전환 효과설정입니다. fade와 scroll 둘중에 선택해주세요
  centeredSlides: true,
  loop: true,
  autoplay: {
    delay: 500, //메인 화면의 fadein되는 초입니다. 1000 = 1초입니다.
    disableOnInteraction: false,
  }
});

var galleryTop = new Swiper('.gallery-top', {
  slidesPerView: 2,
  spaceBetween: 10,
  // init: false,
  navigation: {
    nextEl: '.swiper-button-next-detail',
    prevEl: '.swiper-button-prev-detail',
  },
  breakpoints: {
    640: {
      slidesPerView: 1,
      spaceBetween: 10,
    },
    768: {
      slidesPerView: 2,
      spaceBetween: 10,
    },
    1024: {
      slidesPerView: 2,
      spaceBetween: 10,
    },

  }
});

var swiper3 = new Swiper('.swiper-container2', {
  slidesPerView: 5,
  spaceBetween: 0,
  // init: false,
  navigation: {
    nextEl: '.swiper-button-next2',
    prevEl: '.swiper-button-prev2',
  },
  autoplay: {
    delay: 500 ,
    disableOnInteraction: false,
  },
  speed: 1000,

  slidesPerGroup: 1,
  loop: true,
  loopFillGroupWithBlank: true,
  breakpoints: {
    300: {
      slidesPerView: 2,
      spaceBetween: 10,
    },  
    640: {
      slidesPerView: 2,
      spaceBetween: 10,
    },
    900: {
      slidesPerView: 3,
      spaceBetween: 10,
    },
    1100: {
      slidesPerView: 5,
      spaceBetween: 10,
    },

  }
});

var swiper4 = new Swiper('.swiper-container4', {
  slidesPerView: 4,
  spaceBetween: 10,
  // init: false,
  navigation: {
    nextEl: '.swiper-button-next4',
    prevEl: '.swiper-button-prev4',
  },
  /*autoplay: {
    delay: 500,
    disableOnInteraction: false,
  },*/
  speed: 1400,

  slidesPerGroup: 1,
  loop: false,
  loopFillGroupWithBlank: true,
  breakpoints: {
    640: {
      slidesPerView: 2,
      spaceBetween: 10,
    },
    900: {
      slidesPerView: 4,
      spaceBetween: 10,
    },
    1100: {
      slidesPerView: 4,
      spaceBetween: 10,
    },

  }
});

var swiper5 = new Swiper('.swiper-container-recommend', {
  slidesPerView: 5,
  spaceBetween: 0,
  // init: false,
  navigation: {
    nextEl: '.swiper-button-next-recommend',
    prevEl: '.swiper-button-prev-recommend',
  },
  autoplay: {
    delay: 500,
    disableOnInteraction: false,
  },
  speed: 1000,

  slidesPerGroup: 1,
  loop: true,
  loopFillGroupWithBlank: true,
  breakpoints: {
    300: {
      slidesPerView: 2,
      spaceBetween: 10,
    },  
    640: {
      slidesPerView: 2,
      spaceBetween: 10,
    },
    900: {
      slidesPerView: 3,
      spaceBetween: 10,
    },
    1100: {
      slidesPerView: 5,
      spaceBetween: 10,
    },

  }
});

});