Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f504f79a6e622e47069bd611e7a1cabae0e48cfffd2e722c20473e4aad13effa:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^