All selectors

OpenZeppelin 5

0x5274afe7: SafeERC20FailedOperation

error SafeERC20FailedOperation(address)

What it means

A transaction that reverts with the raw data 0x5274afe7 hit the custom error SafeERC20FailedOperation, defined in OpenZeppelin 5. The explorer shows the hex because it does not have the contract's ABI to translate it.

A token call made through the SafeERC20 wrapper failed: the token at the address in the error data refused or misbehaved. Common with non-standard, restricted, or fake tokens.

How to fix it

Verify the token address is the genuine token, then check approval and balance. Lookalike scam tokens fail exactly here.

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More OpenZeppelin 5 errors

0x118cdaa7OwnableUnauthorizedAccount
0x1e4fbdf7OwnableInvalidOwner
0xe450d38cERC20InsufficientBalance
0xfb8f41b2ERC20InsufficientAllowance

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.