Hello, I am having same problem. Console errors below (Chrome 89)
The FetchEvent for "https://page.url.com" resulted in a network error response: the promise was rejected.
Promise.then (async)
(anonymous) @ superpwa-sw.js:74
superpwa-sw.js:1 Uncaught (in promise) TypeError: Failed to fetch
(index):1 Site cannot be installed: Page does not work offline. Starting in Chrome 93, the installability criteria is changing, and this site will not be installable. See https://goo.gle/improved-pwa-offline-detection for more information.
