Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ac5588aa345d581b5b3834119c03a020cd9c0df1786a1291d6d36218f9ac3eea:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^