![Inheriting the OZ ERC-20 token contract - I go to compile and I get a constructor visibility error - Contracts - OpenZeppelin Forum Inheriting the OZ ERC-20 token contract - I go to compile and I get a constructor visibility error - Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/optimized/2X/5/5f04bfd74040fdee236a8ca3374609638137c274_2_690x370.png)
Inheriting the OZ ERC-20 token contract - I go to compile and I get a constructor visibility error - Contracts - OpenZeppelin Forum
![Truffle Imports of OpenZeppelin Contracts fail for art NFT (Factory ERC 1155 smart contract) - Smart Contracts - OpenZeppelin Forum Truffle Imports of OpenZeppelin Contracts fail for art NFT (Factory ERC 1155 smart contract) - Smart Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/original/3X/c/a/ca52031e085060fa8dd54524232be9ec144ec511.png)
Truffle Imports of OpenZeppelin Contracts fail for art NFT (Factory ERC 1155 smart contract) - Smart Contracts - OpenZeppelin Forum
![ethereum - DeclarationError: Undeclared identifier - although it's present in ERC721.sol - Stack Overflow ethereum - DeclarationError: Undeclared identifier - although it's present in ERC721.sol - Stack Overflow](https://i.stack.imgur.com/f0sjA.png)
ethereum - DeclarationError: Undeclared identifier - although it's present in ERC721.sol - Stack Overflow
![ERC721 Contract Cant Verify due to Source "@openzeppelin/contracts /token/ERC721/ERC721.sol" not found: File import callback not supported - Contracts - OpenZeppelin Forum ERC721 Contract Cant Verify due to Source "@openzeppelin/contracts /token/ERC721/ERC721.sol" not found: File import callback not supported - Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/optimized/3X/9/d/9d468a12a7934a6a724d3d0170e283197594f8e9_2_690x408.png)
ERC721 Contract Cant Verify due to Source "@openzeppelin/contracts /token/ERC721/ERC721.sol" not found: File import callback not supported - Contracts - OpenZeppelin Forum
![Truffle migrate importing OpenZeppelin Contracts results in Cannot read property "0" of null - Contracts - OpenZeppelin Forum Truffle migrate importing OpenZeppelin Contracts results in Cannot read property "0" of null - Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/original/2X/a/af79860eb0452b49d2e0790c3f532232557173bf.png)
Truffle migrate importing OpenZeppelin Contracts results in Cannot read property "0" of null - Contracts - OpenZeppelin Forum
![Source "@openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable. sol" not found: File import callback not supported - Smart Contracts - OpenZeppelin Forum Source "@openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable. sol" not found: File import callback not supported - Smart Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/original/3X/3/8/38b3cdcf0eba48cd8d29e56ca1de2cb64b62ef73.jpeg)
Source "@openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable. sol" not found: File import callback not supported - Smart Contracts - OpenZeppelin Forum
Add "fromAddress" to utils/Strings.sol · Issue #2197 · OpenZeppelin/ openzeppelin-contracts · GitHub
![Truffle Imports of OpenZeppelin Contracts fail for art NFT (Factory ERC 1155 smart contract) - Smart Contracts - OpenZeppelin Forum Truffle Imports of OpenZeppelin Contracts fail for art NFT (Factory ERC 1155 smart contract) - Smart Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/original/3X/b/c/bc7a1aaef73e673887907530a5e23cebcc0fed89.png)
Truffle Imports of OpenZeppelin Contracts fail for art NFT (Factory ERC 1155 smart contract) - Smart Contracts - OpenZeppelin Forum
![Update URI after minting and then freezing URI so it cant be updated again - Smart Contracts - OpenZeppelin Forum Update URI after minting and then freezing URI so it cant be updated again - Smart Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/original/2X/6/68164e00ba8c56af6271c32d3b956884ea22bb34.png)
Update URI after minting and then freezing URI so it cant be updated again - Smart Contracts - OpenZeppelin Forum
![Not found: File import callback not supported import "../utils/Context.sol" - Support - OpenZeppelin Forum Not found: File import callback not supported import "../utils/Context.sol" - Support - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/original/2X/f/f9d63d9fe52661d45903e366284fd9f89dbd3062.png)