Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e2902e5376cfd90b9819731774a7a2ecd440d3a41a9a10b0043df6fe0e962761:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^