Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6cbf227cffaf2affe52aa2d215d5b44686338918e079c89205b955c675bc8cfa:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^