Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f087a3efd77fda06f2633e6d326539982580c50c047e025ea99f7e925cd88d9f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^