Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9faf083ff2100f07a5e11bd9fa78274fc4871188be88ba1ff4144ce827d70804:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^