Cannot set properties of null (setting 'innerText')

**Describe the bug**
Please just add a null-check on the `messageDiv`. See the screenshot.

**Screenshots**
<img width="1194" height="1872" alt="Image" src="https://github.com/user-attachments/assets/aef0bf2a-b642-48ca-a58d-ad71fe29db8f" />