Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a3c52c88b49525e6231b334840f8fd3bb62cdf654b069f9936bf8c2d0892da77:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^