我希望单击完成/未完成的单个任务按钮，使用Vuex存储操作将完成的任务数据切换到相反状态。但是我收到了404错误。即使我正在传递子组件的任务id。或者我应该用突变来做？
https://stackblitz.com/edit/nuxt-bootstrap-vue-dynamic-img-bkwixg?file=store%2Findex.js,components%2FTask.vue

// Child component

<template>
  <div :class="{ task: task.completed }">
    <p class="content">
      {{ task.todo }}
    </p>
      <button @click="toggleTask">
        {{ task.completed ? 'Undone' : 'Done' }}
      </button>
  </div>
</template>

<script>
export default {
  data() {
    return {};
  },
  props: ['task'],
  methods: {
    toggleTask(id) {
      this.$store.dispatch('toggleTask', id);
    },
  },
};
</script>

// Parent component

<template>
      <Task v-for="task in tasks" :key="task.id" :task="task" />
</template>

<script>
export default {
  data() {
    return {
      todo: '',
      completed: false,
      search: '',
    };
  },
  computed: {
    tasks() {
      return this.$store.getters.getTasks(this.search);
    },
  },
  mounted() {
    this.$store.dispatch('getTasks').then((data) => console.log(this.tasks));
  },
};
</script>

// Store 

export const state = () => ({
  tasks: [],
});

export const actions = {
  async getTasks(context) {
    const res = await fetch('https://dummyjson.com/todos/user/5');
    if (res.ok) {
      let result = await res.json();
      context.commit('setTasks', result.todos);
    }
    return res.ok;
  },
  async toggleTask(context, id) {
    const res = await fetch(`https://dummyjson.com/todos/${id}`, {
      method: 'PUT',
      headers: {
        'Content-Type': 'application/json;charset=utf-8',
      },
      // body: JSON.stringify(data),
    });
    if (res.ok) {
      const tasks = (context.state.tasks.find(
        (task) => task.id === id
      ).completed = !completed);
      context.commit('setTask', id);  // or should I commit to toggle task mutation and how can I do it ?
    }
    return res.ok;
  },
};

export const mutations = {
  setTasks(state, data) {
    state.tasks = data;
  },
  toggleTask(state, id) {
    state.tasks.find((task) => task.id === id).completed = !completed;
  },
};

export const getters = {
  },
};