Error: cannot estimate gas; transaction may fail or may require manual gas limit UNPREDICTABLE_GAS_LIMIT

Smart Contracts
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1

Hi guys, I have this error when I try to deploy with Fuji and also with a Subnet, but using Hardhat local node I have no problems. I have tried different options. Here is my hardhat.config.js with the configuration I have added:

  defaultNetwork: 'hardhat',
  networks: {
    hardhat: {
    chainId: 1337 // We put 1337 to make the interaction with MetaMask easier.
    },
    fuji: {
    blockGasLimit: 100000000429720, // whatever you want here.
    allowUnlimitedContractSize: true,  
    url: FUJI_RPC_URL,
    accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
    gas: 2100000, 
    gasPrice: 8000000000
    },
    subnet: {
    blockGasLimit: 100000000429720, // whatever you want here.
    allowUnlimitedContractSize: true,  
    url: { SUBNET_RPC_URL,
    accounts: PRIVATE_KEY_ADMIN !== undefined ? [PRIVATE_KEY_ADMIN] : [],
    gas: 2100000, 
    gasPrice: 8000000000
    },
  },
};

I have added some settings that I saw in forums, however it does not work.