Metamask error: “Error data = 0x when they try to send arguments to an intelligent contract function”
As a metamask user, you can experience an unexpected error message by trying to contact the Ethereum portfolio or intelligent contracts. In this article we are immersed in the details of the error and we give tips to solve it.
error details
An error message indicates that there is a problem with data sent to the function in an intelligent contract. The exact syntax and context are as follows:
Error: Exception of call reversal [see (method =" check (String, being ..
This message suggests that the "Check" function in an intelligent contract has an error running. In particular, it is said that the unexpected data difference occurred when the arguments were sent to the "check" method.
Error demolition
Divide the error message:
[See This line indicates a specific page of the Ethers.js documentation, which describes in detail how to handle errors in intelligent contracts. More precisely, he mentions the exception of the "return" that causes when there is an error when causing methods.
(method = "check (string, bytes)"):: The first part of the string refers to a specific call for the intelligent contract (in this case the” check “function).
- `
(Data =” 0x “): This specifies that the sent data is the title (0x), which are coded to sixteen.
- (Errorolargs = null, ErrorName = …)
: The last two parts of the chain describe the context of the error. "Error" is set to "null", which means that the method has not been given further arguments. As for "ErrorrName", it seems that this is not a standard attribute of Ethers.js documentation.
to solve the error
To solve this problem, you can try the following steps:
- Check the details of the transaction : Check if the transaction contains all the required fields and parameters.
- Check the contract function
: Check the "check" function to confirm that confirm the correct types of arguments (string and bytes).
3.
4.
Example Use the box
To illustrate problems, create a simple example:
Solidity
Pragma solidity ^0.8.0;
Contrast of the contract test {
Function control (String _Message memory) public {
// Check the message using the contract address
You need (_Message.length == 32 && _Message! = "Hello", "Incorrect message or content");
The return is true;
}
}
// install a contract with the new Ethereum network
Pragma solidity ^0.8.0;
Speered installer {
public agreement;
Constructor () {
// Use the ether.js installation function to create and install the contract
Contractdress = address (0x ...); // List the actual contract installation code
Implementation (contract);
}
DeportContract function (title _ADDress) internal {
// Installing a new copy of the contract using the eThers.js installation functions
// This automatically initiates a contract with a specific address and ABI
}
}
In this example, we have created a simple contract in which “test control” uses the “check” method to check the message. The contract was then installed in the Ethereum network and called “Verify”.
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