Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> da863d25eaef1333a9735097fb9048d2fda3b250783fa143ce37e4832df53896:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^