Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c80dedd0525639a3348501fd334da81e5f819a6217faf1c6ff149d6f2648f4c3:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^