Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 59d1f1b9c84f5bd718a5a6e3558f71554e6b3c7e53bced4d9afd887f5334b831:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^