Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f343cca97521b38978be00eaceeba67516d70d8bb438d0b3523b21bc43e3e942:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^