Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6aeb5d1fcd12a795b0b70d58a398eaec58de444ed41f4c4198ad41cda72b6049:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^