TypeError: Member "_safeMint" not found or not visible after argument-dependent lookup in contract ERC721

Smart Contracts
1

I have issue on smart contract. how to solve it.

TypeError: Member "_safeMint" not found or not visible after argument-dependent lookup in contract ERC721.
--> WOOD/TokenSwap.sol:29:9:
|
29 | erc721Token._safeMint(msg.sender, tokenId);
| ^^^^^^^^^^^^^^^^^^^^^

2

hey @ram_gawas , we need the full code to be able to help