Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 13a54954c98a50a60beccc29f1815a233f63703f83bd50ca2df76b7621c86ff4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^