Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f8b9e55211f10f25a2168631b73d3706196834158725fda60ddf87eb4a5c21ab:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^