form表单效验bug

<uni-forms-item label="2、有无夜间喂养（入睡后到第二天醒来的期间）" name="muruFeedNight" :required="true">  
                    <radio-group name="radio" v-model="formData.muruFeedNight" @change="radioChangTest($event, 'muruFeedNight')">  
                        <label><radio value="否"/>否</label>  
                        <label><radio value="是"/>是</label>  
                    </radio-group>  
                    <view v-if="formData.muruFeedNight === '是'">  
                        <uni-forms-item label="喂养次数" name="muruFeedNightTimes" required>  
                            <uni-easyinput type="number" v-model="formData.muruFeedNightTimes" maxlength="2" placeholder="请输入"/>  
                        </uni-forms-item>  
                        <uni-forms-item label="每次喂养时间（分钟）" name="muruFeedNightTime" required>  
                            <uni-easyinput type="digit" v-model="formData.muruFeedNightTime" maxlength="2" placeholder="请输入"/>  
                        </uni-forms-item>  
                    </view>  
                </uni-forms-item>

如果先点击了是，再切换成否，表单无法提交。并报错提示 TypeError: Cannot read property 'name' of undefined。请问如何处理