store and warning resolved.

app/package.json

@@ -21,6 +21,7 @@
     "fs-extra": "^8.1.0",
     "material-design-icons": "^3.0.1",
     "pinia": "^2.1.3",
+    "pinia-plugin-persistedstate": "^3.1.0",
     "readline-sync": "^1.4.10",
     "register-service-worker": "^1.6.2",
     "sass": "^1.54.4",

app/src/main.js

 import { createApp, h } from 'vue'
-import VueClipboard from 'vue3-clipboard'
 import App from './App.vue'
 import router from './router'
-import './registerServiceWorker'
 import mqlOptions from './plugins/mqlOptions.js'
 import { loadLanguageAsync, i18n } from './setup/i18n-setup.js'
 import { createMetaManager } from "vue-meta";
@@ -15,11 +13,16 @@ import "./index.css"
 import { plugin, defaultConfig } from '@formkit/vue'
 import formKitConfig from './formkit.config'
 import { createPinia } from 'pinia'
+import piniaPluginPersistedstate from 'pinia-plugin-persistedstate'
+
 const piniaStore = createPinia()
+const isProduction = process.env.NODE_ENV === 'production'
+piniaStore.use(piniaPluginPersistedstate)
+
 var vm = createApp({
   render: () => h(App),
 })
-// window.app = vm
+window.app = vm
 vm.use(piniaStore)
 vm.$router = router
 vm.use(i18n)
@@ -27,10 +30,6 @@ vm.use(router)
 vm.use(plugin, defaultConfig(formKitConfig))
 vm.use(defaultConfig)
 vm.use(createMetaManager())
-vm.use(VueClipboard, {
-  autoSetContainer: true,
-  appendToBody: true,
-})
 vm.use(Toaster, {
   position: "top-right",
   duration: 3000