Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 72592b5b0f7d9f5a30ca50830d606fcf2d6e7906407bd41b3511f85072f7c302:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^