Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0d59bcb2e08ff98d03223ee59223b8442f5f32241248bd99874713ba81b59762:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^