Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f4e7d76e837878677ab574f9dd07ed18bb368511e1df860daaefee410a2fc53f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^