Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 267032cc295191cc0ca48918aeffead6d12aaf84f6ccdd38e89f8c548439bffa:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^