Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f3f28f9d7d430ea417b628764aa55124afd91ab5bca4292b6512dda6c3c4492f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^