[RSS Feed/News] Google Adsense ad code not working on the advertisement

[XenForo]

Hello,
I have fixed my Google Adsense ads.txt.

I want to test run the advertisement section of my site, but it returns an error each time I add my Adsense ad code and click save.

Please help me how to place the Google Adsense ad code without it returning an error each time I save the ad code.
Read more about this Feed . . .