Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 58471a16a8bf1cd521a13bb9606f1b027b128d7cd510c6677364efe14ea17fa4:16:28
   |
16 |                             let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^