Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e01a8bec01adf4fe832a7cc4673d187dff2f125ce72cf77f4a381e81c85d0ec1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^