html - Issue copy pasted Form doesn't work in shopify

<form v-if="!isSoldOut" :data-single-variant="product.variants.length == 1 || !product.options.find(o => o.name == 'TAILLE')"
     :data-variant="selectedVariantForPrice.id"
      class="usf-add-to-cart" 
      formmethod="POST" 
      enctype="multipart/form-data" 
      :data-product-id="product.id" 
      :action="usf.platform.addToCartUrl" 
      @submit="e => _usfAddCartAjax(event)">
                        <input type="hidden" name="id" :value="selectedVariantForPrice.id">
                        <button v-if="product.variants.length == 1 || !product.options.find(o => o.name == 'TAILLE')" 
                            :class="{'usf-visible': isHover}" 
                            type="submit" name="add" 
                            :disabled="isSoldOut" 
                            class="usf-add-to-cart-btn usf-single usf-ajax-to-cart" 
                            :data-product-id="product.id"  >
                                <span class="usf-text" v-html="loc.addToCart"></span>
                                <svg x="0px" y="0px" width="32px" height="32px" viewBox="0 0 32 32" class="checkmark">
                                     <path fill="none" stroke-width="2" stroke-linecap="square" stroke-miterlimit="10" d="M9,17l3.9,3.9c0.1,0.1,0.2,0.1,0.3,0L23,11"/>
                                </svg>
                        </button>
                        <div v-else :class="{'usf-visible': isHover}" type="submit" name="add" :disabled="isSoldOut" class="usf-add-to-cart-btn  usf-ajax-to-cart" :data-product-id="product.id"  >
                            <span class="usf-text" v-html="loc.addToCart"></span>
                            <svg x="0px" y="0px" width="32px" height="32px" viewBox="0 0 32 32" class="checkmark">
                                <path fill="none" stroke-width="2" stroke-linecap="square" stroke-miterlimit="10" d="M9,17l3.9,3.9c0.1,0.1,0.2,0.1,0.3,0L23,11"/>
                            </svg>
              <usf-sizes :value="product"></usf-sizes></div>
 </form>Copy code