I got a great tip here ages ago on favicons, so now I always create my favicons and open graph image using https://realfavicongenerator.net/. I love it. However, I always seem to have the same problem with the IOS Safari icon (see attached screen grab). No matter if I generate a jpg or a png I always get this error: …apple-touch-icon-precomposed.png is ill-formed.
Has anyone else found this or is it just me?