Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2c0ed5fc29b23a8215429ec3f595f80fae8e689dde9adc962dc148da78eb1871:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^