It seems like you followed this documentation: Crowdsales - OpenZeppelin Docs, so what error did you encounter?
And there is a tutorial for the crowdsale contract, you can have a look: Simple ERC20 Crowdsale | OpenZeppelin Community
It seems like you followed this documentation: Crowdsales - OpenZeppelin Docs, so what error did you encounter?
And there is a tutorial for the crowdsale contract, you can have a look: Simple ERC20 Crowdsale | OpenZeppelin Community