Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> efd7c233a0f68e1dd6764d38346b92a95d1bca7761e4233d75374f146e656dac:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^