Hey, I have a problem when trying to sell an NFT
MetaMask - RPC Error: TxGasUtil - Trying to call a function on a non-contract address
I deployed the contract and included the abi and the contract address in the DappProvider.
So after messing around I may have come up with a possible solution for adding a royalty split in the sale of assets on the marketplaceBoilerplate.sol. Im just going to post the new contract:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Counters.sol";
import "github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/ERC721.sol";
import "github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol";
contract marketPlace is ReentrancyGuard {
using Counters for Counters.Counter;
Counters.Counter private _itemIds;
Counters.Counter private _itemsSold;
address public owner;
address public royalty;
constructor() {
owner = msg.sender;
royalty = {ENTER ROYALTIES ADDRESS};
}
struct MarketItem {
uint itemId;
address nftContract;
uint256 tokenId;
address payable seller;
address payable owner;
address payable royalty;
uint256 price;
bool sold;
}
mapping(uint256 => MarketItem) private idToMarketItem;
event MarketItemCreated (
uint indexed itemId,
address indexed nftContract,
uint256 indexed tokenId,
address seller,
address owner,
address royalty,
uint256 price,
bool sold
);
event MarketItemSold (
uint indexed itemId,
address owner
);
function createMarketItem(
address nftContract,
uint256 tokenId,
uint256 price
) public payable nonReentrant {
require(price > 0, "Price must be greater than 0");
_itemIds.increment();
uint256 itemId = _itemIds.current();
idToMarketItem[itemId] = MarketItem(
itemId,
nftContract,
tokenId,
payable(msg.sender),
payable(address(0)),
payable(royalty),
price,
false
);
IERC721(nftContract).transferFrom(msg.sender, address(this), tokenId);
emit MarketItemCreated(
itemId,
nftContract,
tokenId,
msg.sender,
address(0),
address(royalty),
price,
false
);
}
function createMarketSale(
address nftContract,
uint256 itemId
) public payable nonReentrant {
uint price = idToMarketItem[itemId].price;
uint tokenId = idToMarketItem[itemId].tokenId;
bool sold = idToMarketItem[itemId].sold;
require(msg.value == price, "Please submit the asking price in order to complete the purchase");
require(sold != true, "This Sale has alredy finnished");
emit MarketItemSold(
itemId,
msg.sender
);
idToMarketItem[itemId].seller.transfer(msg.value/2); //adjust the denominator to change the amount of dividends sent to the seller address
idToMarketItem[itemId].royalty.transfer(msg.value/2); //adjust the denominator to change the amount of dividends sent to the royalty address
IERC721(nftContract).transferFrom(address(this), msg.sender, tokenId);
idToMarketItem[itemId].owner = payable(msg.sender);
_itemsSold.increment();
idToMarketItem[itemId].sold = true;
}
function fetchMarketItems() public view returns (MarketItem[] memory) {
uint itemCount = _itemIds.current();
uint unsoldItemCount = _itemIds.current() - _itemsSold.current();
uint currentIndex = 0;
MarketItem[] memory items = new MarketItem[](unsoldItemCount);
for (uint i = 0; i < itemCount; i++) {
if (idToMarketItem[i + 1].owner == address(0)) {
uint currentId = i + 1;
MarketItem storage currentItem = idToMarketItem[currentId];
items[currentIndex] = currentItem;
currentIndex += 1;
}
}
return items;
}
}
I approached this method by hardcoding the royalty address into the contract then using that address to create a second transfer in the function createMarketSale. You must manually divide the transfer amount between the seller and royalty so that there is no remainders, in this example the sale is split 50/50 β¦
I realize this is probably not the most efficient solution, so if anyone has helpful nuances or critiques let me know!
1 Like
Can someone help me out with deploying marketplaceBoilerplate.sol ?
im very new to this, i dont know how to do it.
Might be too long to describe here. If you search YouTube for βdeploy smart contract with remixβ, it should give you the info you need.
Thankyou i deployed and one more question, i have to connect it with my metamask right? and as i use it in my browser will i have to deploy it everytime i reopen remix?
When im trying to list NFT, it shows an error in metamask
and when i try to change gas fee it shows error someone help me out pls
I was able to list my NFT for sale
but it does not show up under the βexplore marketβ tab
How do I go about fixing this?
hello thanks
I am sorry in advance for all the copy-paste that will follow my question.
I have encountered this same problem was time I run yarn start
- the website opens but nothing works
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Search for the keywords to learn more about each error.
PS C:\Users\OrelSror\ethereum-boilerplate>
Hey @orels
Its okay you dont have to copy all the errors if they are same 
check this and let me know if it will help you
thank you for the quick response
I am so new at coding/ programming it would take me some time to understand everything they write and apply it.
1 Like
hello guys i wanted to ask why my βExplore Marketβ page doesnt have a βBuy nowβ green badge as shown in the tutorial.
i have the same questions. hoping somebody will help us hehe
Hey,
This might have to do with /src/helpers/collection.jsβ¦ if you already havent made an additional input for the collection youre trying to render, it wont show up in the βExplore Marketβ tab. When you open this file, copy the template thats already in place for the eth mainnet; then replace the: chain ID (IIRC rinkebyβs is 0x4), addrs (contract address for the collection you want to render), name= {name of collection}, and image = {cover image url you want to render}.
EX:
"0x4": [
{
image:
"https://lh3.googleusercontent.com/Ju9CkWtV-1Okvf45wo8UctR-M9He2PjILP0oOvxE89AyiPPGtrR3gysu1Zgy0hjd2xKIgjJJtWIc0ybj4Vd7wv8t3pxDGHoJBzDB=s130",
name: "Bored Ape Yacht Club",
addrs: "0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D",
},
Let me know if this helps, if not I still might be able to help!
Hey,
I ran into this problem too a while back⦠The issue I faced was found in /src/components/NFTTokenIds.jsx
Given you already followed the instructions in the tutorial for syncing and watching new contract events within the moralis serverβs page. Within these two lines in NFTTokenIds.jsx:
const queryMarketItems = useMoralisQuery("CreateRoyaltyMarketItems");
const marketList = Moralis.Object.extend("CreateRoyaltyMarketItems");
You must make sure the quotations match the TableName you inputted into the synced event submission. IIRC, my TableName input was off from what the tutorial had
Hope this helps!
My NFTS are on ipfs. How do I get my images to show?
This could be an issue with whether your IPFS daemon is running or not. Assuming you minted the NFTs using the sharable link provided by IPFS, the gateway must be running in order to render the assets within the boilerplate.
This can be a cumbersome process because it requires you to consistently have your IPFS gateway running; to circumvent this, I would suggest looking into a pinning service (http://docs.ipfs.io.ipns.localhost:8080/how-to/mint-nfts-with-ipfs/#option-1-pinata)
Hey, I just ran into the same problem and I fixed it by increasing the gas fee. Might be a simple answer, maybe try increasing the gas fee more than you thought? Keep incrementally increasing the priority fee and gas fee until the red error saying the fee is βtoo low for network conditionsβ goes away
hope that is helpful
Hi everyone,
I got the following error while buying the NFT.
MetaMask - RPC Error: [ethjs-query] while formatting outputs from RPC '{"value":{"code":-32603,"data":{"code":-32000,"message":"transaction underpriced"}}}
Anyone, please help me to resolve this, metamask popup is working fine after clicking the confirm button i get this error I think the error is related to gas fees how I can increase the gas fees?
Thank you.
After reading the error it looks you are trying to buy NFT at lower prices than it actually is.