Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d2a78d0e34a19a5a7c6be531199a7b18eba114a1f31ba982ab08afb9930619f1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^