Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c0a3585fb8be7ebd4748886e7a90768297cc84c1555c001405d96dffe6b38ab7:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^