<span v-for="(vItem,vIndex) in item.value" :key="vIndex">
          <InputTag v-model="vItem" style="margin-right: 10px" closable @close="handleAttrValClose(index,vIndex)">{{ vItem }}</InputTag>
        </span>

You are binding v-model directly to a v-for iteration alias. This will not be able to modify the v-for source array because writing to the alias is like modifying a function local variable. Consider using an array of objects and use v-model on an object property instead

这个错误是由于在使用v-for循环做一些动态生成的事务时，v-model直接绑定了v-for中的迭代变量导致的

需要调整代码为如下才可以

<span v-for="(vItem,vIndex) in item.value" :key="vIndex">
          <InputTag v-model="item.value[vIndex]" style="margin-right: 10px" closable @close="handleAttrValClose(index,vIndex)">{{ vItem }}</InputTag>
        </span>