Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d689a724930aa113225077b59b4187ddb3d0b745da71d54875c04ed2b7c72183:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^