Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 568766143512de302849bce1aa8edf8e552665590d19b0b39d7c6a5303edf2d8:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^