OK, I understand what the messages means, but I\'m really not sure what\'s causing it. I\'m using Safari and the Web Inspector on Mac OS X, by the way.
I\'v
An image with an empty "src" attribute generates this error under Windows-Chrome:
... whereas ...
... does not.
I arrived here because my ajax resultset was returning "src" data which was empty yet the img was still being inserted into the page.