[Vuejs]-Vue.js w Webpack : owl.carousel doesn't display

solved … typing erro mounted should not be embeded into methods !!

 methods: {
    installOwlCarousel: function () {
      $('.owl-carousel').owlCarousel({ items: 4, loop: true, margin: 10 })
    }
  },
  mounted: function () {
    this.$nextTick(function () {
    this.installOwlCarousel()
    })
  }