Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bb88f872c049504e44f7d7f5514624a5791022a028e8bac2cf52e50126e0e840:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^