Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3e56edcb23ee3598037f40f041d3b17fb529fcfa6ee833f75a7a1be8e6928f48:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^