Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9473d827a162890eaa7401823d2667cca812341129659c05a213042f66598d25:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^