Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e5e200752f6adf404eba89502de9749c51b9e88de2edabebeebdc5b32285d880:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^