Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d5118372f832b9fe5a4be94739d9993e0ee6e9e71246b58700cda0f89f19f535:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^