在函数调用中进行参数的无效类型。无效的隐式转换从地址到地址应付请求的地址.sg.sender和adress 0

Question

    // create the fllow to transform the ownership of the nft
    //from the item owner(seller) to the contract that will transact to the buyer
    IERC721(nftcontract).transferFrom(msg.sender,address(this),tokenId);

    //after the marketitem is created
    //the market item creation is an event executed by this contract so we must emit it so that the details of the market item will be listned to or used
    emit MarketItemcreated(
     ItemId,
     nftcontract,//the nft because the nft contract address means the nft created
     tokenId,
     msg.sender,//seller is the msg.sender                              // we don't do payable because we emit only the details of the cretaedmarketid (what the market id contain)
     address(0),//no one yet own this nft
     price,
    false//not yet solde    
    );
}

我在味精中面临问题。

Answer 1

我认为问题是您没有将函数修改为付款。您没有显示完整的代码，我认为您发布的代码在一个函数内部，并且此函数必须标记为付款。如果不是这种情况，请共享完整的功能代码。一个常见的错误是不要将msg.sender用付款（msg.sender）。因为由于坚固性0.6.0 msg.sender不再应付。