'WalletConnectProvider not working with custom RPC

I want to connect custom RPC with WalletConnectProvider. But I keep getting an error of Uncaught Error: PollingBlockTracker - encountered and error.

Here below is my code:

const providerEth = new WalletConnectProvider({
  rpc: {
    32520: "https://nc-dataseed.brisescan.com",
  },
  chainId: 32520,
});

await providerEth.enable();

let provider_extended = await new ethers.providers.Web3Provider(
  providerEth
);

const tokenContract = new ethers.Contract(
  contractAddress,
  contractABI,
  provider_extended
);

Here below is the error: enter image description here



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