OIDC UserManager method calls in Pina store for Nuxt 3 - pinia

Question

This is my first Nuxt 3 application. I am using oidc-client-ts for authorization and authentication.
First I created this Plugin
import { UserManager, WebStorageStateStore } from "oidc-client-ts";
export default defineNuxtPlugin(({ nuxtApp }) => {
const userManager = new UserManager({
authority: "https://localhost:7267",
client_id: "application-name",
redirect_uri: "http://localhost:3000/oidc/sign-in-callback.html",
response_type: "code",
scope: "openid profile IdentityServerApi role",
loadUserInfo: true,
post_logout_redirect_uri: "http://localhost:3000",
//silent_redirect_uri:"http://localhost:3000",
userStore: new WebStorageStateStore({ store: window.localStorage }),
});
return {
provide: {
auth: userManager,
},
};
});
Then I created this Pinia store
import { defineStore } from "pinia";
export const useAuthStore = defineStore("authStore", {
state: () => ({
user: null,
loading: true,
}),
actions: {
initialize() {
this.$auth.getUser().then((user) => {
if (user) {
this.state.user = user;
}
});
},
},
});
I have two questions.
How do you call useAuthStore.initialize() after the Plugin is instantiated?
When I try to call this.$auth.getUser() in the pinia store I get a 500 error