Mixed Content Error SSL

Could you please see if you can point me in the right direction here?

I just set up SSL for https://debrazaslow.com/. Some pages have the green padlock but there is one error blocking it on the Homepage and all pages with layerslider. Here is what whynopadlock says:

An image with an insecure url of “http://66.147.244.224/~debrazas/wp-content/uploads/2014/02/Texture-2.jpg” was loaded via the javascript file: https://debrazaslow.com/wp-includes/js/jquery/jquery.js?ver=1.12.4 on line 2. The insecure URL may not be directly contained in the script file and may exist elsewhere.

66.147.244.224 is the IP that was used when the site was in development and there is some code in the Theme Options > General Styling > Quick CSS that seems like it would be the culprit except that it was changed by Better Search and Replace and still there is the error.

.avia-layerslider .ls-inner div, .avia-layerslider .ls-inner img{
background-image: url('https://debrazaslow.com/wp-content/uploads/2014/02/Texture-2.jpg');
}

Is this just being cached somewhere or is something else going on?

Thanks so much for any help!
David