Ethernaut Challenge: Gatekeeper One

Question

Trying to pass the second gate, but I don't understand why Remix throws the following error when I am trying to execute the function: Gas estimation failed Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending? execution reverted

This is my code.

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IGatekeeperOne {
  function enter(bytes8 _gateKey) external returns (bool);
}
contract Building  {
  IGatekeeperOne gatekeeperOne = IGatekeeperOne(0x6AdE211c87Fe3E6C1e074EFbf7C0a58BDDCbdEB1);
  event Failed(bytes reason, uint256 gas);
  function attack() public {
    uint256 initialGas = 80000;
      gatekeeperOne.enter{gas: initialGas}('0x001');
  }
}

Answer 1

Because you would be failing on the gateTwo's require.

The gas needs to be a multiple of 8191 by the time it gets to gateTwo()