Uncaught (in promise) DOMException: GATT operation failed for unknown reason.

[DanieleBenedettelli]

Hi.
I am using your library by adding it like so:

<script src="https://cdn.jsdelivr.net/npm/node-poweredup@latest/dist/browser/poweredup.js"></script>

Then I scan for LEGO BOOST hubs like so:

if (PoweredUP.isWebBluetooth) {
        poweredUP.scan(); // Start scanning for hubs
} else {
    alert("Your browser does not support the Web Bluetooth specification. Maybe you should just forgot https://");
}

Then I use the callback

poweredUP.on("discover", async function(hub) { // Wait to discover hubs
	console.log(" poweredUP on discover");
	await hub.connect(); // Connect to hub
[...]
}

Inside there, I use other handlers:
hub.on("attach", function(device) {
hub.on("disconnect", function() {

I tested my app successfully on Win 10 laptops with Chrome, but on smartphones connecting gives the error:
Uncaught (in promise) DOMException: GATT operation failed for unknown reason.

I had a lot of troubles installing VS to modify the library, otherwise I would have suggested a solution. Maybe, maybe, it's a matter of timing in data exchange, but it's just my hard guess.

Thanks!