エラーを修正しました。

frontend/src/layouts/MainLayout.vue

@@ -19,7 +19,7 @@
         </q-item-label>
 
         <EssentialLink v-for="link in essentialLinks" :key="link.title" v-bind="link" />
-        <div v-if="isAdmin">
+        <div v-if="isAdmin()">
           <EssentialLink v-for="link in adminLinks" :key="link.title" v-bind="link" />
         </div>
       </q-list>

frontend/src/stores/useAuthStore.ts

@@ -51,7 +51,7 @@ export const useAuthStore = defineStore('auth', {
         this.permissions = (tokenJson as any).permissions ?? 'user';
         api.defaults.headers['Authorization'] = 'Bearer ' + this.token;
         this.currentDomain = await this.getCurrentDomain();
-        this.userInfo = await this.getUserInfo(this.userId!);
+        this.userInfo = await this.getUserInfo();
         router.push(this.returnUrl || '/');
         return true;
       } catch (e) {
@@ -76,8 +76,8 @@ export const useAuthStore = defineStore('auth', {
         kintoneUrl: data.url,
       }));
     },
-    async getUserInfo(id:string):Promise<UserInfo>{
-      const resp = (await api.get(`api/v1/users/${id}`)).data;
+    async getUserInfo():Promise<UserInfo>{
+      const resp = (await api.get(`api/v1/users/me`)).data;
       return {
         firstName: resp.first_name,
         lastName: resp.last_name,