// SPDX-License-Identifier: MIT pragma solidity ^0.8.18; import " https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.6.0/contracts/token/ERC721/ERC721.sol "; import " https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.6.0/contracts/access/Ownable.sol "; import " https://github…

[image] BtcDragonz: _exists(tokenId) You can probably replace this with ownerOf(tokenId) != address(0).

[image] BtcDragonz: I am facing issue What is the issue?

firstly I cant verify it on etherscan. and if i replace the import statement with these kind of imports import "[@openzeppelin/contracts/token/ERC721/ERC721.sol]; import "[@openzeppelin/contracts/access/Ownable.sol]; then i get this error {DeclarationError: Undeclared identifier. require(_exis…

[image] BtcDragonz: import "[@openzeppelin/contracts/token/ERC721/ERC721.sol]; import "[@openzeppelin/contracts/access/Ownable.sol]; This is not proper syntax. You should get rid of the square brackets, and add a closing double-quote before the semicolon: import "@openzeppelin/contracts/to…

DeclarationError: Undeclared identifier. --> contracts/Tiar.sol:54:17: | 54 | require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); | ^^^^^^^ then i get this error

// SPDX-License-Identifier: MIT pragma solidity ^0.8.18; import "@openzeppelin/contracts/utils/Strings.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/…

[image] BtcDragonz: --> contracts/Tiar.sol Are we supposed to guess the contents of this file???

[image] BtcDragonz: _exists What's this then?

[image] barakman: Are we supposed to guess the contents of this file??? sorry barakman i did'nt get you

You still need to answer this .

ERC721 token uri error

Smart Contracts

barakman December 5, 2023, 11:26am 9

What's this then?

Topic		Replies	Views
I ran in to a problem With Solidity need Some help Developer Wanted	13	385	April 30, 2024
ERC721 Contract Cant Verify due to Source "@openzeppelin/contracts/token/ERC721/ERC721.sol" not found: File import callback not supported Contracts erc721 , etherscan-verify	3	773	July 23, 2024
A problem in my tokenURI function on my contract Smart Contracts erc721	2	1160	August 27, 2023
The ERC721 sample in official doc is not working anymore Contracts erc721	2	749	April 16, 2021
DeclarationError Undeclared identifier Need Help Smart Contracts erc721 , solidity	0	206	April 28, 2024

ERC721 token uri error

Related topics