Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f9cd2416acb10050c65ce3800a9ebcbdc12c499473c02d85b46f4ab35c4c4f75:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^