suspense-parent-template.htm

<template>
  <div v-if="error"> {{ error.message }}</div>
   <Suspense v-else>
    <template #default>
      <Admins />
      <Users />
    </template>
    <template #fallback>
      <div>Loading...</div>
    </template>
  </Suspense>
</template>

suspense-parent.js

export default defineComponent({
 setup() {
  const error = ref(null);
  onErrorCaptured(caughtError => {
    error.value = caughtError;
    return true;
  })}
  return { error };
 }
});