Metamk tuning: “Solution of exception VM treatment: Return” DAPP error
As a developer working on a decentralized application (DAPP), you may have encountered interaction problems with the intelligent contract using the Metamk interface. One of the normal error that may occur is when I try to send a value from Frontend to an intelligent contract, which makes “the exception of the VM in the processing of the transaction: Renewal”.
In this article, we will go into what causes these mistakes, and give you step by step solutions to solve them on your DAPP journey.
Understanding error
The “VM Exception Exception When processing the transaction: Return” occurs when Metamk attempts to process a transaction that is considered invalid or cannot be restored. This can happen for a variety of reasons, for example:
- Insufficient balance in your Metamk safe
- Interaction of an intelligent contract that causes invalid condition
- Try to send a value out of the expected payment channel
Causes and solutions
- Insufficient balance in handbag
To solve this problem, make sure that Metamask’s wallet has enough balance to cover all the transactions you need for an intelligent contract.
`Javascript
// Example of JavaScript code check your wallet balance
Const Metamk = Metamk window;
Metamk.getbalance (). Then ((bilant) => {
if (balance <100) {
Console.log (“Insufficient Balance. Please send more funds”);
// Send means using another channel or method
}
});
`
- Invalid Intelligent Interaction of the Contract
Make sure the interaction of the intelligent contract is correct and follow the expected protocol. Make sure you are using the correct payment channel and whether the transaction is done correctly.
`Javascript
// Example of JavaScript code to perform a contract transaction
Const Contractaddress = ‘0x … Contractaddress’;
Const ContonCfunctionName = ‘MyContractfunction’;
Try {
Const score = wait for the contract
Name of contractual function,
[
// Method of calling with correct arguments
]
);
Console.log (result);
} Catch (Error) {
Console.error (Error);
}
`
3
Invalid intelligent contractual status
Before trying to communicate with it, make sure that the intelligent contract is in a valid position.
`Javascript
// Example of JavaScript code to check the position of contract
Const Contractaddress = ‘0x … Contractaddress’;
Try {
Const ContractState = expect a contract.
if (contract === null) {
Console.log (“Invalid Status. Check the Logic of the Contract.”);
// insert a backup solution or process of invalid conditions
}
} Catch (Error) {
Console.error (Error);
}
`
- Correct use of the payment channel
Make sure you use the correct payment channel to interact interact.
`Javascript
// Example of JavaScript code to switch to another payment channel
Const Contractaddress = ‘0x … Contractaddress’;
Const PlatterChannelide = ‘PlatterChannellid’;
Try {
Const score = wait for the contract.
Console.log (result);
} Catch (Error) {
Console.error (Error);
}
`
The best procedures to address errors
- Regularly check your wallet balance and make sure it is enough.
- Make sure the interaction of the intelligent contract is correct and follow the expected protocol.
- Please check the variables and values while performing using notifications of the debugger or printing.
- Insert the errors processing mechanisms to capture and record errors.
When performing these activities and proven procedures, you should be able to solve “Exception of VM errors: Restore” errors in your DAPP development path. Be sure to stay alert and adapt to all changes in intelligent requirements for the interaction of the contract or the requirements for the balance of your wallet.
