JSON-RPC provider by https with infura - Error: could not detect network

[sshmaxime]

Hello guys, did anyone manage to use infura with ether.js like so:

const provider = new ethers.providers.JsonRpcProvider('https://mainnet.infura.io/XXX');
console.log(await provider.getBlockNumber());

because when I do that it throws it throw Error: could not detect network (event="noNetwork", code=NETWORK_ERROR, version=providers/5.0.23)

I know it exist an infura provider but I don't want to use it bc I want to be able to use any kind of url on the fly.

[sshmaxime]

Issue found. I forgot /v3/ in the url.