Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 145518c1ee950004b85aa1629cc09ccfbc508947d779a300cba93b9defad879f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^