Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ca2a4fe70d3f12228837cd742800bb74f881e17702dfc70afdfd6a7d9826f474:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^