OpenZeppelin 5
error ERC721InsufficientApproval(address,uint256)A transaction that reverts with the raw data 0x177e802f hit the custom error ERC721InsufficientApproval, defined in OpenZeppelin 5. The explorer shows the hex because it does not have the contract's ABI to translate it.
The operator is not approved to move this NFT: no per-token approval and no approval-for-all from the owner.
Approve the marketplace or contract for the NFT (or collection) first, then retry the transfer or sale.
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Every selector on this page was computed as the first 4 bytes of keccak256 of the signature shown. A selector identifies a signature exactly; on rare occasions two different signatures share one, so the transaction decoder is always the more precise answer.