Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 749ef64152d19a2f4bc60004eae52a481a428fb0bedfb61ee70d92deed6dca62:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^