Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 963bdadeb4b974a34f8c84348580902a92dbb959bf0fa17f1846926d55926a3d:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^