Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 43e0e3130af21ba4f5a22d91d448a285a3f627f54cc276b363c30715c952f6ca:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^