Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2620ba66471a5608fbbf6a14d193a693229547b703b3a735c431c7b0653f85f5:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^