Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e6ab15ee6cf8b39078671052bc69285406b17735188a438467b893f89a5c0fc6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^