Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 66add87c0bbc33e0ae14d648695e720bdddfe4b2cb239706565ed600eead4dd4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^