Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bf5a29d1bede770749d7620395cf356501ac72386ae5ed49195da37dec7a3e30:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^