Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 84b3dfed2793f39471d9d9c3467e78ac92441cf66705931e2f3d2a740559e157:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^