Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b6cd9327b13baa2ef3998a7fbbc5d9472b48e37a3b5cd070a801129933afb072:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^