vue-upload-component 手机端无法多选，如何解决？

使用的vue-upload-component 手机端还是不能一次选择多个文件

<template>
  <div class="file-upload-container">
    <ul>
      <li v-for="file in fileList" :key="file.id">
        <span>{{file.name}}</span> -
        <span>{{file.size}}</span> -
        <span v-if="file.error">{{file.error}}</span>
        <span v-else-if="file.success">success</span>
        <span v-else-if="file.active">active</span>
        <span v-else-if="!!file.error">{{file.error}}</span>
        <span v-else></span>
      </li>
    </ul>
    <file-upload-vue class="btn btn-primary"
    :post-action="postAction"
    extensions="gif,jpg,jpeg,png,webp"
    accept="image/png,image/gif,image/jpeg,image/webp"
    multiple
    :thread="10"
    v-model="fileList"
    @input-filter="inputFilter"
    @input-file="inputFile" ref="upload">
      <i class="fa fa-plus"></i>
      select files
    </file-upload-vue>
    <button type="button" class="btn btn-success" v-if="!upload || !upload.active" @click.prevent="upload.active = true">
      <i class="fa fa-arrow-up" aria-hidden="true"></i>
      Start Upload
    </button>
    <button type="button" class="btn btn-danger"  v-else @click.prevent="upload.active = false">
      <i class="fa fa-stop" aria-hidden="true"></i>
      Stop Upload
    </button>
  </div>
</template>

<script>
import FileUploadVue from 'vue-upload-component'
export default {
  name: 'fileUploadComponent',
  components: {
    FileUploadVue
  },
  data () {
    return {
      postAction: '',
      fileList: [],
      upload: {}
    }
  },
  methods: {
    inputFilter (newFile, oldFile, prevent) {
      if (newFile && !oldFile) {
        // 添加文件前
        console.log(newFile)
      }
    },
    inputFile (newFile, oldFile) {
      if (newFile && !oldFile) {
        // add
        console.log('add', newFile)
      }
      if (newFile && oldFile) {
        // update
        console.log('update', newFile)
      }
      if (!newFile && oldFile) {
        // remove
        console.log('remove', oldFile)
      }
    }
  }
}
</script>

<style scoped>

</style>

FileUploadVue这个组件里面怎么写的