"Internal error: User denied account access." Need help please, thanks!

[Karthik144]

I'm trying to send USDC from one account to another. The code I've attached below worked when we tried sending a dummy erc-20 token. Now, when I try sending USDC from my account to another, I get the following error: Error(code: -32603, message: "Internal error: User denied account access.")

    // Send transaction (ERC-20 token)
    func sendTransaction(magic: Magic, userPublicAddress: String, amount: Double){

        do{

            // 3nd instance of web3
            let web3 = Web3(provider: magic.rpcProvider)

            // Create usdc contract instance
            let contractAddress = try EthereumAddress(hex: "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174", eip55: false)
            let contract = web3.eth.Contract(type: GenericERC20Contract.self, address: contractAddress)

            let exponent = 18
            let ten = Decimal(10)
            let result = NSDecimalNumber(decimal: pow(ten, exponent))

            let amount = NSDecimalNumber(value: amount)
            let amountInWei = result.multiplying(by: amount)
            let convertedWeiType = BigUInt(amountInWei.stringValue) ?? 0

//            print("Converted Wei Amount: \(convertedWeiType)")

            // Send some tokens to another address (signing will be done by the node)
            let myAddress = try EthereumAddress(hex: userPublicAddress, eip55: false)

            firstly {
                web3.eth.getTransactionCount(address: myAddress, block: .latest)
            }.then { nonce in

                try contract.transfer(to: EthereumAddress(hex: "0xA741b63997bbF5AaC72bd36380533aaE0f419b14", eip55: false), value: BigUInt(convertedWeiType)).send(
                    nonce: nonce,
                    from: EthereumAddress(hex: userPublicAddress, eip55: false),
                    value: 0,
                    gas: 150000,
                    gasPrice: EthereumQuantity(quantity: 21.gwei)
                )
            }.done { txHash in
                // Success
                print("Tnx Hash (WalletViewModel): \(txHash)")

            }.catch { error in
                print("sendTransaction, WalletViewModel")
                print(error)
            }

        } catch {
            print("sendTransaction, WalletViewModel")
            print(error)
        }

    } //: SEND TRANSACTION

[koraykoska]

@Karthik144 This is most likely an RPC error. I don't see anything wrong with your code