Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2160b3a59cc285c0fd6d916331f69a3a873bc87620440072be407d9ce3ebb3a6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^