Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9a94413ea41a9a1a8df774474fbab99103b664d0044929b2f6666686c864f3e9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^