Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> daf7954701dac9c850ff09d94b627858ac78aa081fd03ebfcec633c5eb2d0fcd:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^