[Vue warn]_ Avoid using non-primitive value as key, use string_number value instea

[Vue warn]: Avoid using non-primitive value as key, use string/number value instead.
found in
---> <DataDivComponent> at src/components/dataDivComponent.vue
       <Predict> at src/views/predict.vue
         <App> at src/App.vue
           <Root>
...

<p v-for="item in availableModelList" :key="item" @click="setUsedModel(item)">
</p>

<p v-for="(item, key) in availableModelList" :key="key" @click="setUsedModel(item)">
</p>