Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 64a7dd7173a2f9564247501afe4336657b7de3c251e6bfae54a58f451701a7c1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^