What it means
An arithmetic operation went above the maximum or below zero for its number type. Since Solidity 0.8 this check is automatic. For a user, the practical meaning is usually an amount that does not fit: subtracting more than a balance, or a calculation the contract did not expect.
How to fix it
Check the amounts in the transaction against your actual balances and positions. If your inputs look right, the contract hit a state its developers did not anticipate, which is worth reporting to the protocol rather than retrying blindly.