Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7c9b2b7b63e97ab8d3767082c3cc129eb402f0bf72254686495f94f3edac1318:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^