Flattening error: i tried a solution but it has not wore

Support Contracts
1

flattening error
flattening error1000×107 31.4 KB

C:\Users\user\Babies_World>npx truffle-flattener ./node_modules/@openzeppelin/contracts/token/ERC721/ERC721.sol > src/contracts/ERC721.sol
(node:2476) Warning: Accessing non-existent property 'INVALID_ALT_NUMBER' of module exports inside circular dependency
(Use node --trace-warnings ... to show where the warning was created)
(node:2476) Warning: Accessing non-existent property 'INVALID_ALT_NUMBER' of module exports inside circular dependency

i got this error after using the command i was directed

2

These are warnings, not errors.