Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 92e48458f5bc12f3d04b9bec52ade37ae0e083b726b1a52caada3f3036bcf937:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^