Ethernaut lvl.2 (Fal1out) requires update

Security Ethernaut
1

The version is 0.6.0 in the example.

(upload://yngC0PnXdNhF97O9pT2AeDaH4M4.png)

When I loaded it into remix, I got this error

(upload://zo4LTMQhlaA7F4dJvxiPVItdMZF.png)

Oops, looks like the link is no longer working. When I replace it with the updated one via this link:
// import ‘@openzeppelin/contracts/math/SafeMath.sol’;
import “@openzeppelin/contracts/utils/math/SafeMath.sol”;

I get the new error:
(upload://eCX98wWAbcL83xmJuEkceF78Un3.png)

But when I use the latest compiler version, I get a host of new errors:

Shot 2021-05-19 at 11.42.17 PM
Shot 2021-05-19 at 11.42.17 PM566×1300 92.2 KB

Ughh… This is frustrating. I understand how to pass this level after reading a guide:

However, I would love to have been able to solve this myself, not to mention since using remix was in the hint! Any ideas how to fix this? I would fix it myself if I knew how. The backwards compatibility issue throws don’t make any sense to me. Anyone who can explain why "TypeError: Type address is not imiplicitly convertible doesn’t work, please enlighten moi. Thanks!

P.S. I had to remove the other images because I’m a new user. Perhaps someone can give me the privilege to post all my errors?

2

You should use the compiler version that is declared in the code. If you need to import OpenZeppelin Contracts you should use a version that works with that version of Solidity.

For Solidity 0.6, use OpenZeppelin Contracts 3.x. In remix:

import '@openzeppelin/contracts@3.4.1/math/SafeMath.sol';

etc.

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