Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> cdc819a8c378746b78f25fc15246a0696ec49688da51fbad15f9e75129aadafa:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^