Wallet Connect QR code doesn't open. walletConnect?.activate(chainId) gives undefined response.

[HaiderNimra]

I am tring to connect it with a custom testnet chainID. In start it worked fine QR code opened and I connected my app. but now QR code opens 1/50 times and gives response undefined. Can someone please tell me What's wrong.

const WalletConnect = async () => {
await walletConnectV2
?.activate(1338)
.then((res) => {
console.log("Response:::", res);
})
.catch((err) => {
console.log("Error", err);
});
};

Response::: Undefined