Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fa8292ae00b6bfdf481c073b3d0edac772a3c060c2920372ddf153be5d9296c0:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^