Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2b96eb4aa7e8411f459c041744317dd0ff3cc3467dd2caae830fece799f9a498:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^