Reload when 400 Error and unregister service worker

webview.js

@@ -1,8 +1,38 @@
-module.exports = (Franz) => {
+"use strict";
+
+const { remote } = require('electron');
+const webContents = remote.getCurrentWebContents();
+const { session } = webContents;
+
+window.addEventListener('beforeunload', async () => {
+  try {
+    session.flushStorageData();
+    session.clearStorageData({
+      storages: ['appcache', 'serviceworkers', 'cachestorage', 'websql', 'indexdb']
+    });
+    const registrations = await window.navigator.serviceWorker.getRegistrations();
+    registrations.forEach(r => {
+      r.unregister();
+      console.log('ServiceWorker unregistered');
+    });
+  } catch (err) {
+    console.err(err);
+  }
+});
+
+module.exports = Franz => {
   function getMessages() {
-    Franz.setBadge(document.querySelectorAll('mws-conversation-list-item div.text-content.unread').length);
+    // Reload on error
+    const el = document.getElementById('af-error-container');
+
+    if(el) {
+      window.location.reload();
+    }
+
+    // Get message count
+    const messages = document.querySelectorAll('.text-content.unread').length;
+    Franz.setBadge(messages);
   }
 
-  // check for new messages every second and update Franz badge
   Franz.loop(getMessages);
 };