Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 02ee8633ed7a3b72c1962474fe64a55096899219bd4632364376ed359a895ac7:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^