Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 345b20e6500d2576defe582df04080f6a6da8e26fd6cca96efb01fceb5c33975:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^