Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> caca621020cc4ea59e3b05c2f777810df16d84e3ee53bb282d81262080f1b962:15:8
   |
15 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^