Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 46a980a250ce98f6afa5288e88902ed472fc5af8edafee88c1bd58979fb96e6e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^