Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 59b080744d52d97fc97917b2a2d40d96fa6b369577a7778329a99ddef21fdc83:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^