Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 36ff875e344792a1bd5b9bc134bdfde6252776d255e106a97a1715f3edc0e119:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^