Problem giving a name to an ERC20 token

Support Contracts
1

Hi!

I am trying to create a token.

pragma solidity ^0.5.16;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract Token is ERC20 {

   address public minter;

   event MinterChanged(address indexed from, address to);

   constructor ( ) public payable ERC20 ("name", "symbol") {

       minter = msg.sender; 
   }

   function ....
       .....
}

While compiling in truffle I got: "Wrong argument count for modifier invocation: 2 arguments given but expected 0." Speaking about the arguments "name" and "symbol" in the constructor.

I can compile it without giving a name, but I don´t know how to do it otherwise.

Hope someone can help me,

2

You seem to be using the older Solidity and OpenZeppelin Contracts versions. Use the latest versions and Solidity 0.8.

Check out Contracts Wizard for more help.

2 Likes
3

Thank you!

I changed my truffle-config.js to this:

module.exports = {

  networks: {
  development: {
     host: "127.0.0.1",
     port: 7545,
     network_id: "*" // Match any network id
  },
  develop: {
     port: 8545
 }
 },
 compilers: {
 solc: {
   version: "^0.8.0"
 }
}
};

But, I am still having some trouble with the version of the imports of open zeppelin. I tried changing open zeppelin version with

npm install @openzeppelin/contracts

But I am still having version issues.

Thanks a lot!

4

I fixed it at last with:

 npm install @openzeppelin/contracts@4.0.0

Thank you for letting me know the version problem!