Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0f0e9b2c48e560242d2b2935f336635f01482912cc5272a2f9b558ce21e0b231:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^