Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> afca3304d143767169ffb8f27ec5989f034324a897fc902203856449ca629fa1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^