Computed property “xxx“ was assigned to but it has no setter.

vue Use in vuex Store the data ,
And then to v-model Assignment control shows hidden discovery error

Writing like this below will report an error , Change the writing method

<template>
  <div class="head">
    <el-radio-group v-model="isCollapse" @change="changeFold">
      <el-radio-button :label="false" title=" an " v-show="isCollapse"
        ><i class="el-icon-s-unfold"></i
      ></el-radio-button>
      <el-radio-button :label="true" title=" Fold " v-show="!isCollapse"
        ><i class="el-icon-s-fold"></i
      ></el-radio-button>
    </el-radio-group>
  </div>
</template>

<script>
import { mapState } from "vuex";
export default {
  data() {
    return {};
  },
  computed: {
    ...mapState(["isCollapse"]),
  },
};
</script>

 computed: {
    isCollapse: {
      get() {
        return this.$store.state.isCollapse;
      },
      set() {
      },
    },
  },