Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 91254be26cd005d64ccfbadeea57ec32952d014cd2ccfa67d2950a8fc8b4a511:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^