Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3c992707728331a7d589bf07d6a84630d35fba27750d1a1367a0b5d17b1efab7:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^