Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b111711b61d082715926160146adedfeb169c4a2a414eb58dab8c04327ed061f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^