Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 65c71010f16a5d9b523449f097569eac3620b75714ba3b06a9e877eff39186e4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^