Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 20259e1f2a76256de24bcd24c53f5b3a43a2701a0555b47149e8b700a5668054:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^