How to add adsense ads.txt to Wordpress

Hi, I'm trying to create Ads.txt file. I do it using Ad Inserter WordPress plugin, But not display ads.txt file on my website it's empty. I can see this message on my plugin " Account IDs found in blocks but not present in ads.txt file"

How to fix this?

Just upload the file via Filezilla
You dont need a plugin for it