Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 709103e91b8b93f638daef0436d608f323cedd49cf80ad2bff2234b7de06c8d2:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^