Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2baf9ef1c35b70891ba4d907a43e1cf431012087650b7b5df256648da72ce345:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^