onMounted

pages/blog/[id].vue

@@ -43,7 +43,8 @@
 </template>
 
 <script setup>
-import { useFetch, useRoute, useState, createError, onMounted } from '#app';
+import { ref, onMounted } from 'vue';
+import { useFetch, useRoute, useState, createError } from '#app';
 
 const route = useRoute();
 const account = useState("account");