Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 39c7910831ff5c8b8d068a6fe74c2223712b1340e4f8a9c56423d8d6edb89856:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^