The child theme isn’t the issue. If you didn’t have one before the update adding one now won’t make any difference. Here’s what I’m seeing now:
1. You’re loading a style.css file from a directory named “cora-child”. Is that valid?
2. On your home page the banner image at the top of the content is wrapped in a <code>
tag. This is not css; it’s part of the HTML page structure. This is not something that’s generated by the Hueman theme.
3. There are dozens of errore being genereated from references to a stylesheet named “www-embed-player-vflZNlRSj.css”. I can’t see where this is being loaded.
4. The page <body>
tag now looks like this:
<body class="s1-collapse s2-collapse">
Those are two of the classes the theme would insert but there are several others that are missing.
I suppose a place to start might be to disable all your plugins and see what that gets us. Hopefully that would put your site back to the basic theme layout. If that works then you’d need to enable the plugins one at a time until you find the one that causes the problem.