Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a938f3a9824f40b2780c0a550012b40b059c2cb2389d541a9901dea6b86aab8c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^