What the error means
A swap includes a minimum amount you will accept. If the price moves past it between your click and execution, the swap reverts instead of filling at a worse price.
Common causes
- A tolerance that is too low for a fast-moving or thin token.
- A trade large relative to the pool.
- Slow submission, which gives the price time to move.
Fix
- Raise slippage a little and try again.
- Split a large trade into smaller ones.
- Use a higher priority fee so the transaction lands sooner.
Do not set slippage very high on illiquid tokens, because you may fill at a much worse price. Background: what slippage is.