Navbar is not functional in mobile layout

**Navbar**

![Frontend Error](https://github.com/coderdost/MERN-ecommerce-Frontend/assets/98550817/ac30f1af-9e52-4fe4-86ff-1f2b511adb91)

**Issues**
<ul>
<li>Admin and User Navigation not working.</li>
<li>Pressing any button in navbar in mobile screen fetch back to home screen.</li>
<li>Sign out not working</li>
</ul>


