https://naiwaen.debuggingsoft.com/2022/05/wordpress-fixed-mixed-content-the-page-at-https-site-url-was-loaded-over-https-but-requested-an-insecure-favicon-this-content-should-also-be-served-over-https/
[WordPress] Fixed Mixed Content:  The page at 'https://site-url' was loaded over HTTPS, but requested an insecure favicon ... This content should also be served over HTTPS.