I'm using WebView in mi App to display an internal webpage (192.168.xxx.xxx). In my phone, Motorola G31, it works fine.
When I install it in a ZTE Blade A33 plus phone I get the ERR_CACHE_MISS error and it does not display the page.
Copy and paste the error message here using the </> tags above. Do the same with a small project or on your project click file>export as zip> then post the zip file here using the </> tags to display it. If zipped file is too large a file to post, you might use another program to shrink the file, then post that file.