uniapp表单 uni-forms错误

            <view class="time">
                <uni-forms-item label="讲座开始时间" name="post_time" required>
                    <uni-datetime-picker type="datetime" v-model="lecData.post_time" @change="changeLog" />
                </uni-forms-item>
                <uni-forms-item label="讲座地点" name="post_position" required>
                    <uni-easyinput v-model="lecData.post_position" placeholder="请输入地点" />
                </uni-forms-item>
                <uni-forms-item label="讲座限制人数" name="num_limit" required>
                    <uni-easyinput v-model.number="lecData.num_limit" placeholder="请输入讲座限制人数" type="number" />
                </uni-forms-item>
            </view>

    data() {
            return {
                
                "imageStyles":{
                        "height": 150,    // 边框高度
                        "width": 265    // 边框宽度
                },
                lecData: {
                    post_time: '',
                    post_position: '',
                    num_limit: 0,
                }
            }
}