Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ee2a5901384f10ae4af29f99630166277f374190332fa9f9a55b2ee11196a789:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^