Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bf1c23ce083666c4d873b9fe5678dbba40f1d082488957f87b95111e1731d863:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^