Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f62607bff102d55548d5c3d4f000656bfe4b3a80919b589e365ace57ce659fa7:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^