Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 235a0b66f63020c0770e1ae26d5a36662307e27dc50a197eec52be976ed6a046:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^