Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e690c5467d7daa215dfb9e7b00c25a933e8870288a83aeb36af4af961f558097:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^