Migrating contract with truffle gives me transaction revert

user_13497421 0
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My contract .sol file looks like this:

// SPDX-License-Identifier: MIT
pragma solidity >=0.4.22 <0.9.0;
import "@openzeppelin/contracts/token/ERC777/ERC777.sol";

contract ERC777MainToken is ERC777{
  constructor(address[] memory defaultOperators) ERC777("COIN", "COIN", defaultOperators) { }
}

And the migration looks like this:

const ERC777MainToken = artifacts.require("ERC777MainToken");

module.exports = async function(_deployer) {
  const mainToken = await _deployer.deploy(ERC777MainToken, ["0x5d95F05Dd72A5cB9ea2ee2DC271B03A41C933Cad"])
};

On truffle migrate I get the following error:

"ERC777MainToken" hit a require or revert statement somewhere in its constructor. Try:
   * Verifying that your constructor params satisfy all require conditions.
   * Adding reason strings to your require statements.

    at /usr/local/lib/node_modules/truffle/build/webpack:/packages/deployer/src/deployment.js:365:1
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
    at Migration._deploy (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/Migration.js:74:1)
    at Migration._load (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/Migration.js:61:1)
    at Migration.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/Migration.js:212:1)
    at Object.runMigrations (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/index.js:150:1)
    at Object.runFrom (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/index.js:110:1)
    at Object.runAll (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/index.js:114:1)
    at Object.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/index.js:79:1)
    at runMigrations (/usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/commands/migrate.js:263:1)
    at Object.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/commands/migrate.js:228:1)
    at Command.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/command.js:136:1)

Any Ideas why? I have check every constructor and no one has any require conditions.

truffle solidity migration
2 Answers

I find the problem. The ERC777 contract from open zeppelin has an hardcoded memeber _ERC1820_REGISTRY = IERC1820Registry(0x1820a4B7618BdE71Dce8cdc73aAB6C95905faD24) which is the global ERC1820 Registry for the main net but since I am on local net this address is at most nothing.

contract ERC777 is Context, IERC777, IERC20 {
    using Address for address;

    IERC1820Registry constant internal _ERC1820_REGISTRY = IERC1820Registry(0x1820a4B7618BdE71Dce8cdc73aAB6C95905faD24);

    mapping(address => uint256) private _balances;

   ....
}

And the constructor is tring to access the contract on this address:

 constructor(
        string memory name_,
        string memory symbol_,
        address[] memory defaultOperators_
    ) {
        _name = name_;
        _symbol = symbol_;

        _defaultOperatorsArray = defaultOperators_;
        for (uint256 i = 0; i < defaultOperators_.length; i++) {
            _defaultOperators[defaultOperators_[i]] = true;
        }

        // register interfaces
        _ERC1820_REGISTRY.setInterfaceImplementer(address(this), keccak256("ERC777Token"), address(this));
        _ERC1820_REGISTRY.setInterfaceImplementer(address(this), keccak256("ERC20Token"), address(this));
    }

But since this address on the local net might be empty and 100% is not what it should be the transaction is reverted.

user_134974210

If in your code you have a require or revert statement in your contract, add an error message like this: require(condition, errorMessage); or revert (errorMessage);

user_89508200
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