diff --git a/src/Client.js b/src/Client.js
index 4825638..63f3153 100644
--- a/src/Client.js
+++ b/src/Client.js
@@ -802,7 +802,9 @@ class Client extends EventEmitter {
      */
     async logout() {
         await this.pupPage.evaluate(() => {
-            return window.Store.AppState.logout();
+            if (window.Store && window.Store.AppState && typeof window.Store.AppState.logout === 'function') {
+                return window.Store.AppState.logout();
+            }
         });
         await this.pupBrowser.close();
         
@@ -1723,4 +1725,4 @@ class Client extends EventEmitter {
     }
 }
 
-module.exports = Client;
+module.exports = Client;
\ No newline at end of file