none of this code works any more

[startgeek]

because now the current version of solidity is 0.5.x
and also truffle is 5
and openzeppelin-solidity is 2.0

practically watching videos from youtube is useless unless at least you refactor this
repo

i really appreciate your effort

[jacobsteenhuysen]

someone rewrote the open-zeppelin library into 5

[dbrowne24]

You can add this to your truffle.js or truffle-config.js file to make truffle use the 0.4.24 version of the solidity compiler.

  compilers: {
    solc: {
      version: "0.4.24"
    }
  }

Just make sure you also have:
pragma solidity ^0.4.24;

at the top of your smart contracts too.

[etanoox]

someone rewrote the open-zeppelin library into 5

@jacobsteenhuysen Can we ask where we can find it?

[faisalKhan-99]

openzeppelin has removed the "contratcs/crowdsale" from github. How do we go about this now?

[wabbittdevs]

It would be good to modify your tutorials and maybe code to show us how to use Open-zeppelin 2.5 which still has the crowdsale functionality. Hopefully this is possible.