Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7654f8ffbb94dc124e4425a6db395accb107da333f446812c87423f9d3b3c7f1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^