Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 936d4ae6133648315067717977c1d07779940c3511ab2d81d644f03d627cbce1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^