Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d9665c2e323c1fcf48915b7de2473ff02ceb43e4c0443309e526d6a514b09c3b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^