<el-select @change="orgChange" v-model="sectionNameOpt" filterable placeholder="">
<el-option
v-for="item in sectionNameOpts"
:key="item.index"
:label="item.orgName"
:value="item.orgId">
</el-option>
</el-select>
where sectionNameOpts is the data returned by the background; it can be selected in the test environment . But after production environment , you can"t get the first value! What is the reason, please? Is it because of key?