Code: 141, error: 'getaddrinfo EAI_AGAIN deep-index.moralis.io'

I am getting the error quite frequent in these days. I am connecting to BSCTestnet. The error comes after calling the following. If it is related to the free plan, then it is fine. But I am worried if it it not.

const nftOwners = await Moralis.Web3API.account.getNFTsForContract(options);

Anyone has the similar issue?

That error should not be related to free plan. It looks like it can not resolve the domain.