Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dd25283b643ea41f53527b22582ca84b9600e45850d8011f98a1cc70f1063b7c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^