I have the same problem on my site https://fortunaplay-games.com/ and I don’t know why? I just installed and use the A3 LazyLoad plugin and nothing else. I tried to find a solution on stackoverflow, but no one knows what to do with this problem. The most frequent recommendation is not a critical issue, which is based on the specifics of the new version of Google Chrome. You don’t have to worry, it doesn’t affect the site’s work, but I like the console to be clean.