Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 52889972bcabd1e595852c462f7b01c40252682921567651cf650e40cd10eb74:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^