web3swift.Web3Error.processingError(desc: "Failed to fetch gas estimate")（BSC Chain）

[ciyaer]

Error:
processingError(desc: "Failed to fetch gas estimate")

My code:

func sendBEP20Token() {
        let password = "web3swift"
        let privateKey = "XXX"
        let formattedKey = privateKey.trimmingCharacters(in: .whitespacesAndNewlines)
        let dataKey = Data.fromHex(formattedKey)!
        let keystore = try! EthereumKeystoreV3(privateKey: dataKey, password: password)
        let keystoreManager = KeystoreManager([keystore! as EthereumKeystoreV3])
        print(keystoreManager.addresses!)
        
        let endpoint = "https://data-seed-prebsc-1-s1.binance.org:8545/"
        let web333 = web3(provider: Web3HttpProvider(URL(string: endpoint)!, network: Networks.Custom(networkID: BigUInt(97)))!)
        web333.addKeystoreManager(keystoreManager)
        
        let value = "0.0001" // BTCB
        let decimal = 18
        //let amount = Web3.Utils.parseToBigUInt(value, units: .eth)
        let amount = Web3.Utils.parseToBigUInt(value, decimals: decimal)!
        let address = EthereumAddress("0x9b16e5c921b6b82a36e101717708b3da411746a4")
        let toAddress = EthereumAddress("0x50bc2c973adf4b0071ac85c23beb646e5288c1b5")
        let tokenAddress = EthereumAddress("0x6ce8da28e2f864420840cf74474eff5fd80e65b8") // BTCB
        
        let contract = web333.contract(Web3.Utils.erc20ABI, at: tokenAddress, abiVersion: 2)!
        var options = TransactionOptions.defaultOptions
        options.value = amount
        options.from = address
        options.gasLimit = .automatic
        options.gasPrice = .automatic
        let tx = contract.write("transfer", parameters: [toAddress!, amount] as [AnyObject], extraData: Data(), transactionOptions: options)!
        
        do {
            let result = try tx.send(password: password)
            print(result)
            print(result.hash)
        } catch {
            print(error)
        }
    }

BSC Testnet Network:
https://testnet.bscscan.com/address/0x9b16e5c921b6b82a36e101717708b3da411746a4

BTCB Token:
https://testnet.bscscan.com/token/0x6ce8da28e2f864420840cf74474eff5fd80e65b8?a=0x9b16e5c921b6b82a36e101717708b3da411746a4

JSON-RPC Endpoint:
https://docs.binance.org/smart-chain/developer/rpc.html

ChainID (EVM Networks):
https://chainid.network

Binance Smart Chain Faucet:
https://testnet.binance.org/faucet-smart

@skywinder

[losedMemory]

Hi, Is this problem solved now?

[ciyaer]

Hi, Is this problem solved now?

😂NO，waiting for someone to help me

[skywinder]

Hi. Can't research it for now. Looks like it's some different parameters on the BSC side.

It would be nice to support BSC on a generalized level.
I'm ready to create a GitCoin bounty for someone, who is ready to implement it. (payment could be negotiable, depends on the amount of work) 👍

[khimchuk00]

Just delete options.value = amount and it will work

[Iysbaera]

@khimchuk00 Hey, thank you for the advice.

@ciyaer Is this still and issue for your in the latest develop build or it was resolved?

[Iysbaera]

Authour of this issue haven't replied, so I suppose it was resolved and thus closing this issue.

To anyone still experiencing similar problems, feel free to reopen it.