Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fe5e4409ac4dd8826197a59862b661b7c6ff80810d5179573d2254ac20fb36eb:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^