Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b051bebda1ebfb761f215c5d0b8be4259375df28126357591519689343c1851a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^