Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bb06ea70a0d7d868c1a9c68b3fb9302a037359ed2deee270ed3ec58050741329:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^