Developers

Errors and troubleshooting

What contract reverts mean and which inputs to inspect before retrying.

Router errors Error Inspect Expired Deadline and current chain timestamp. Slippage Both liquidity minima or final recipient balance delta. Refresh quote; do not silently loosen limits. NoPool Pair, curve, fee and verified factory. InvalidRoute Empty path, disconnected hops, identical hop tokens or reused pool. InvalidRecipient Zero address or router used as recipient. transferFrom Token approval, sender balance and token-specific transfer rules. Pool errors Error Inspect Locked Same-pool reentry from a token or flash callback. InsufficientLiquidityMinted / Burned Deposit size, reserves, locked minimum, sent LP amount and rounding. InsufficientOutput / Input Positive requested output and actual transferred repayment. InsufficientLiquidity Requested outputs must be below corresponding reserves. InvalidTo Zero, pool, token-contract recipient or locked-address LP transfer. KInvariant Fee-adjusted repayment insufficient, or stable reserves outside invariant floor. Overflow uint112 raw cap or 10^28 normalized stable reserve cap. UnsupportedDecimals Metadata above 18 decimals. TransferFailed Token transfer reverted or returned false. Factory string reasons include identical, zero, token code, fee tier, exists and creating. Stable initialization requires equal normalized balances and enough liquidity above the locked floor. Reverts are not transactions to retry blindly. Decode against the exact source/ABI revision, simulate with current state and preserve user-approved limits. Never print raw RPC HTML or private wallet data to visitors.