Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 5a2e90acc2a9590837f4136ddec39271740efe65d038d63b3bd52f39b297a1ac:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^