Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8b5301058489ce0f74575def83c8318f678e6a3bdc2183554ff7d25886e62ab6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^