Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8802f2088fb9d96daff38b93f07518cde729ce4cd06619f04fd4e9d10a8009b9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^