If you get an error in Chrome regarding 404 site.webmanifest here is the fix for it. Obviously, check your path is correct first. Then, if you can open the site.webmanifest in a new window look (so no 404), look at the below.
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How to solve Chrome error manifest 404 in Chrome
On a live website, I had an error not present in localhost. Maybe because of the server settings or the password protection. Basically Chrome is complaining about the following 404 + Manifest: Line: 1, column: 1, Syntax error. site.webmanifest:1.
Manifest: Line: 1, column: 1, Syntax error. site.webmanifest:1
There is a simple fix that worked for me, just adding crossorigin=”use-credentials” to the import.
<link rel="manifest" href="your-path/site.webmanifest" crossorigin="use-credentials">
We all like a quick fix, happy days!