Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> cf0550a60de9a54cbe5d211afd65ae04a51871f0f7f726c41755759eca3f09d0:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^