Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2c2916682e593366a002980870eeb21bb7cb4fa560f03be02f739f48cef73fa2:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^