Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7a1222a9271510c2097953e9c479fcac4794a00e764fea6c1ad682c65471e975:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^