Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 01eded2ddbd3cd2d2b2fc95076b734697a7536e5aecfa197643238d36c877938:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^