Ethereum: Error: Missing or invalid parameters. Double check you have provided the correct parameters. Even with correct type casting
Ethereum: Error – missing or not valid parameters in the function of the contract
As a developer, he works with intelligent contracts in intelligent contracts based on Ethereum, in particular with the latest subsequent ones. The specified error message indicates that the missing or not valid parameters are missing when calling a function in a contract. In this article, we will manage the reasons for these errors and give instructions on how to be resolved and resolved.
Why does the error occur?
When writing a function for interaction with an intelligent contract for Ethereum using Next.js, several factors can contribute to the error “missing or not valid parameters”:
- False functional signature : Make sure that the “contraction” parameter is in most cases in the “address: address” format.
2 Ethereum Blockchain -Api follows a certain structure to recall the functions for contracts.
3 If the contract has changed since the ABI has been updated, it may be necessary to update the parameters of the functional call accordingly.
4
Passages for problem solving:
To dissolve the error, follow these detailed instructions:
passage 1: check the functional signature
- Check if the ABI file of the contract (for example
inhab.json) is correctly formatted and corresponds to the planned structure.
- Make sure the functional signature in the code corresponds to the ABI file.
Example:
`Json
// ABI.Json
{
“Input”: [],
“Name”: “Mycontratct”,
“Outputs”: [],
“Statemutability”: “”,
“Type”: “”
}
`
Step 2: Sinax of correct functional call
- Make sure to call the right function with the Parameters and the right order. Check the contract provider library or SDK documentation to obtain the use of the "contractual" parameter.
- Make sure the name of the function, the type of return and the input topics of the ABI file correspond to the contract.
Example:
Jsx
// Myconttract.js
Import {eters} from ‘ethereal’;
Const MyContract = Async () => {
// Call function with correct parameters
};
`
Step 3: Update the control interface
- If the contract has changed, update theinhab.json ‘file to reflect the new ABI.
- Make sure to use the latest version of the contract provider or SDK library.
Example:
`Json
// ABI.Json
{
“Input”: [],
“Name”: “Mycontratct”,
“Outputs”: [],
“Statemutability”: “”,
“Type”: “”
}
`
passage 4: check and test the code
- Perform the application with theABI.JSON` updated file to check if the function call has a positive result.
- Testa the interactions of the contract with an instrument such as Remix or Truffl Suite.
If you follow these steps, you should be able to make the error “missing or not valid parameters” when called functions on intelligent contracts based on Ethereum in Next.js.
