Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0401c07cd574529de72a9d86cf5c8cba54149cbc8a83f084745ecdae9c50da60:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^