Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 89298527bffc14b94609e1f8ab8f75da147f64be3b034455c374870b4498a1a3:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^