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I am getting an error from brownie compile and I can't figure out why it wont import one of the openzeppelin contracts when all the others import ok. here is my brownie-config.yaml

# https://eth-brownie.readthedocs.io/en/v1.10.3/config.html#exclude_paths
reports:
  exclude_contracts:
    - SafeMath
dependencies:
  # - smartcontractkit/[email protected]
  - OpenZeppelin/[email protected]
compiler:
  solc:
    remappings:
      # - '@chainlink=smartcontractkit/[email protected]'
      - '@openzeppelin=OpenZeppelin/[email protected]'

And the code that is causing the issue:

// SPDX-License-Identifier: MIT
// Creator: Chiru Labs

pragma solidity >=0.8.12;

import '@openzeppelin/contracts/token/ERC721/IERC721.sol';

and the results from brownie compile:

Compiling contracts...
  Solc version: 0.8.13
  Optimizer: Enabled  Runs: 200
  EVM Version: Istanbul
CompilerError: solc returned the following errors:

ParserError: Source "/home/tonyr/.brownie/packages/OpenZeppelin/[email protected]/openzeppelin-contracts/token/ERC721/IERC721.sol" not found: File not found. Searched the following locations: "".
 --> contracts/ERC721A.sol:6:1:
  |
6 | import '@openzeppelin/openzeppelin-contracts/token/ERC721/IERC721.sol';
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

I'm at a loss as to why this one contract wont import when all the others seem to be ok?

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  • There is something I don't understand, your error message doesn't match your source code: import '@openzeppelin/openzeppelin-contracts/token/ERC721/IERC721.sol'; is different from import '@openzeppelin/contracts/token/ERC721/IERC721.sol'; Also in error message openzepellin version doesn't match the one in your configuration file: 4.4.1 & 4.5.0 Commented Mar 21, 2022 at 10:28
  • I dont understand it either tbh...but its working now so I will close the question
    – Tony
    Commented Mar 22, 2022 at 13:28

1 Answer 1

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This is working now, without any changes. I dont have an explanation

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  • The explanation is that you didn't delete your build folder... I nuked my system twice without realizing that is what causes this. Sometimes it gets corrupted.
    – ctnava
    Commented Mar 22, 2022 at 14:47

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