Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 98744b1ecc49ac614862da8232114aa18dcde6465a669b31f4223a4bf28956b9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^