Always reload page after `Files.insert({...})` of `ostrio:files`?

I base on Meteor + Vue.
It always reload page after Files.insert().

```js
const Files = new FilesCollection({
  storagePath: () => {
    return `${Meteor.absolutePath}/fileUploads` // project path
  },
  collectionName: 'app_files',
})
```js
// Vue tmp
<p>
      <img
        :src="filePreview"
        width="120px"
        height="125px"
      />
      <input
        ref="fileUploadHidden"
        type="file"
        accept="image/*"
        style="display: none"
        @change="filePicked"
      >
    </p>

    <el-button
      type="default"
      @click="pickFile"
    >Select file</el-button>
    <el-button
      type="primary"
      @click="uploadFile"
    >Upload file</el-button>
-----------
// Vue method
    uploadFile() {
      if (this.fileUpload) {
        Files.insert({
          file: this.fileUpload,
          streams: 'dynamic',
          chunkSize: 'dynamic',
          onUploaded(err, fileObj) {
            console.log('Upload', fileObj)
            if (err) {
              Notify.error({ message: 'File upload is error' })
            } else {
              Notify.success({ message: 'File upload is success' })
            }
          },
        })
      } else {
        Notify.error({ message: 'File upload is required' })
      }
    },

Please help me

I tried to use @click.prevent="pickFile", still reload.