Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0301775bb8d0f156d5947d359198dee16d1b7aa772327cfc96043646387a6041:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^