Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1bdc1fb3ae29958076d97ab5771759835bcdbb83ea31219cc0238cf6e2d44621:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^