Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8fbca54eba0e9c88296a650283b1c116eb32653938ad44b92f3a9e0058533f75:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^