Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9f0bd0498970c5c52f3d511f489b5df6d9a62f199727af42831139eeeb3b559f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^