Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b178539aaab12a96f5691406b556499fd40cb87f6bfe23cc5aa03131bef30f13:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^