Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c55c80ca88ba73f96370ee48e09f3addf79c1b2f1082131fa78ac82654aee297:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^