A transaction outside Shade’s curves

Program HcBxoEUVA1FQNmbrnvgA48WS8PRH1stErmUS8uxhARKp invoke [1]
Program log: Instruction: PumpSell
Program log: AnchorError thrown in 038383ff-bf30-4df2-9b0d-b538214d6453/src/lib.rs:30. Error Code: InvalidAmount. Error Number: 6003. Error Message: Calculated amount is zero.
Program HcBxoEUVA1FQNmbrnvgA48WS8PRH1stErmUS8uxhARKp consumed 10799 of 200000 compute units
Program HcBxoEUVA1FQNmbrnvgA48WS8PRH1stErmUS8uxhARKp failed: custom program error: 0x1773