Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 18d7dea47a0947fa15add53eeb50db0729084853351bbb032cdbf29bd46f702f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^