Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2b14e1d46771d3a113a247ca30455c9f507ea7b7acda33b56cb820de1c9bf767:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^