Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 629948944771c5e03ee1cbcfff0db67f52b0100bf2b3776bcacf5363037a62ee:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^