Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 5686406dbcdd2737ed760130b37d4f803c15538d8a333b0ced3ea996cdc6358c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^