Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8213f9fb7430c10b6eafaf755820d91105265bbcc696507695cc5ead92d5d897:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^