Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 082f670342b98bc21b7caf8d60b7afa9a61e0822c1024655a73d856430b53e1c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^