Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c10f2757d30c173b0b55e4a0f892402260fb289bef566090cd6090b339e69abc:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^