Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> aff4ca1e909135c888c90c09fc2815e8c132f219c505c94e1a6d963cf9aa940b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^