错误错误:开关上具有未指定名称属性的表单控件没有值访问器

<input type="text" name="username">
<select name="category">
  <option value="1">Category 1</option>
  <option value="2">Category 2</option>
</select>
<textarea name="description"></textarea>

<template>
  <div>
    <form @submit.prevent="submitForm">
      <input type="text" v-model="formData.username" name="username">
      <select v-model="formData.category" name="category">
        <option value="1">Category 1</option>
        <option value="2">Category 2</option>
      </select>
      <textarea v-model="formData.description" name="description"></textarea>
      <button type="submit">Submit</button>
    </form>
  </div>
</template>

<script>
export default {
  data() {
    return {
      formData: {
        username: '',
        category: '',
        description: ''
      }
    };
  },
  methods: {
    submitForm() {
      console.log(this.formData);
      // 这里可以发送数据到服务器
    }
  }
};
</script>