Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f18eaee7cea79473db0ac6f840e128973b8883c61a4585a6885ce54f57af4406:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^