Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 41b79bdad92f2b4f86d7ec267bbf1f0f9a497320f5849b020792040b82fef687:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^