Ethereum Contract error: UNMARSHALING Empty string
The problem you have met is a common problem that occurs when working with Ethereum contracts in go-hereum. The «ABI» module (abstract binary border area) from the «Ethereum/Go-Eherum/V1» package offers an interface for abstract binary interfaces.
The problem:
In your case, the error message indicates that the attempt to be an empty string of Unmarshal, while arguments are expected, fails. However, there is a catch – they try to march an empty cord, which is not a valid argument.
Solution:
To solve this problem, you have to make sure that the contract function receives valid arguments before trying to UNMARSHALER. Here are some steps that help you with the troubleshooting:
- Check the contract function signature: Check your contract function signature to ensure that it is correct and the expected input format corresponds.
- Validate arguments in the contract: Check whether all arguments that have been received in the contract function are valid and no empty consequences.
- Check the contract implementation: Check the implementation of your contract to identify potential problems or edge cases that could lead to an immoral empty string error.
Example code:
Here is a sample code snippet from a go-herseum contract that shows how a contract function is questioned with valid arguments:
`Go
Package Main
import (
"Context"
"Mistake"
"github.com/ethereum/go ethereum/Common"
"github.com/ethereum/go ethereum/abi/v1"
)))
Enter myContract Struct {}
Func (c *mycontract) Hello (context.context, args abi arg0) error {
Return Abi.unmarshalingjson (args) .string ()
}
In this example, the «Hello» function receives an argument of «Args» of the type «ABI (ARG0)» and tries to use it using «Abi.unmarshalingjson». If the arguments are valid, this code is carried out without errors.
Diploma:
To the «Abi: Attempt to empty an empty string of Unmarshal, while arguments are expected», make sure that the function receives valid arguments before trying to go to Unmarshal. Also check the contract implementation and validate all incoming arguments in the contract function signature. If necessary, check the code for potential problems or edge cases.
If you follow these steps and understand the underlying logic of go-hereum contracts, you should be able to solve this error and ensure that your contract functions work as expected.