Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 25eefdb2ccc8c1db07e24630ee904831f3ea798849d95fbde9755b8a75866be6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^