Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dc97f1ddce7e011aa466c6602a2dfa509ca78dfd07c63c343e79fa659da23f52:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^