Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a5be8d586258bb57b79b55cc599b21ddaed76b5510b27a1353944bf70eab8785:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^