Integrated spam-reporting add-in

Hello everyone,

I am currently attempting to implement a spam-reporting add-in into Outlook following the steps from this MS document: https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/spam-reporting

I have followed the documentation meticulously, including joining the MS 365 Insider Program, setting up my environment, and creating an Office Add-In with Yeoman generator. The manifest is configured, and I have implemented all necessary components as per the MS document.

After sideloading the Add-In, it appears in my Outlook. However, when I execute the command, nothing happens, and I encounter an Add-In error.

I am relatively new to Outlook Add-In development and would appreciate any insights or suggestions on what might be causing the issue. Thank you!