Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> efb9931226770e74060d7d7a95f5e853b378977bcea331798e0f22cb9d82bc84:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^