Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c0a14d081446eae6145982d4173d453197e14811f34afbd062266e49ef9063d9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^