Ethereum transaction reverses the problem and solution
As an Ethereum developer, you are probably facing a frustrating problem with the reverted transaction. In this article, we will explore the problem and provide a solution to help you solve it.
Transaction reverses on Ethereum
Transaction reverses occur when an intelligent contract or contract does not comply with their promises or returns errors due to various reasons. These reverses can be expensive for developers as you may need to reimburse users or re -re -re -tokens.
In your case, the problem is with the Transferhelper :: Transferfrom function, which is probably causing a reversal problem. The reason for this is that the transfer function fails when trying to change tokens of an address that does not have enough ether balance in your wallet.
Code Analysis
Here is an excerpt from your code:
`JavaScript
Const Config = Requires (‘./ config’);
// …
Transferhelper :: Transferfrom: Transferfrom failed
console.log (error);
`
The error object contains the reversal reason, which is probably a string indicating why the transaction has failed. In that case, he says:
`
1Transferhelper :: Transferfrom: Transferfrom failed
`
This suggests that the Transferfrom function in classTransferhelper has found a problem and returned error 1.
Solution
To solve the reversal problem, you need to ensure that the portfolio addresses have enough ether balance. Here are some possible solutions:
1. Check the Balance of the Wallet
Make sure all your portfolio addresses have enough ether balance before trying to change the tokens.
`JavaScript
Address const = ‘0x …’; // Portfolio Address
CONST ETHBALANCE = awaits ethherscanclient.getethbalance (address);
if (etcalance <1010 * 18) {// 10 minimum ether for successful transaction
Release a new error (`insufficient ether balance: $ {address});
}
`
2. Increase the balance of the wallet
If the portfolio balances are insufficient, it may be necessary to temporarily increase the balances before trying to exchange.
`JavaScript
Address const = ‘0x …’; // Portfolio Address
CONST ETHBALANCE = awaits ethherscanclient.getethbalance (address);
IF (Etcalance <1010 * 18) {
CONST NEWETHBALANCE = Wait ETHERS.WALLET.CREATEWITHSIGNER (Ether) .attach (‘0x …’);
awaits Ethers.wallet.at (Address) .Prove (Transfertoken, Etcalance + 10);
}
`
3. Use a wallet with high balance of ether
If the portfolio addresses have enough ether balance but still find errors, consider using a wallet that has a high balance of ether.
`JavaScript
Address const = ‘0x …’; // Portfolio Address
CONST ETHBALANCE = awaits ethherscanclient.getethbalance (address);
IF (Etcalance <10010 * 18) {
CONST NEWETHBALANCE = ETHERS.WALLET.CREATEWITHSIGNER (Ether .attach (‘0x …’). Ethers.wallet.at (Address) .Prove (Transfertaken, Etcalance + 10);
}
`
4. Update the Etherscan API
If the reversal ratio is due to an incompatibility between your ether balance and expected by the Transferhelper class, consider updating the EtherScan API to provide more accurate information.
`JavaScript
Const Config = Requires (‘./ config’);
CONST ETHERSCANAPI = new ethherscanclient.etherscanapi (‘your_api_key’);
// …
EtherScanapi.getethbalance (Address)
.Then ((Balance) => {
if (ethbalance! == Balance) {
Release a new error (`insufficient ether balance: $ {address});
}
})
.catch ((error) => {
console.error (error);
});
`
By implementing one or more of these solutions, you will be able to solve the problem of transaction reversal and successfully exchange tokens.
Example of case use
Here is an updated version of your code that includes some error handling:
`JavaScript
Const Config = Requires (‘./ config’);
// …
Transferhelper :: Transferfrom: Transferfrom failed
to try {
It awaits Ethers.wallet.at (Address).