Solution for: “ParserError: Source “openzeppelin/contracts/token/*.sol” not found

Problem: Running into the following error message when attempting to run the command truffle migrate:

$ truffle migrate
...
...
ParserError: Source "@openzeppelin/contracts/token/ERC721/ERC721.sol" not found
 --> project:/contracts/ArtToken.sol:3:1:
  |
3 | import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

,ParserError: Source "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol" not found
 --> project:/contracts/ArtToken.sol:4:1:
  |
4 | import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

,ParserError: Source "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol" not found
 --> project:/contracts/ArtToken.sol:5:1:
  |
5 | import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

,ParserError: Source "@openzeppelin/contracts/utils/Counters.sol" not found
 --> project:/contracts/ArtToken.sol:6:1:
  |
6 | import "@openzeppelin/contracts/utils/Counters.sol";
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Compilation failed. See above.
Truffle v5.4.26 (core: 5.4.26)
Node v16.13.1

Solution: One of the potential causes for this error could be a missing node_modules folder in the directory which contains the contracts directory. Therefore, truffle cannot locate the @openzeppelin/contracts package.

To solve this, run the npm init command in the directory contains the node_modules folder. Then, run the command npm install --save @openzeppelin/contracts to install the required dependency. Retry the command truffle migrate to see if this resolves the error.

Conclusion

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