Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d8be34bd9da74f02596f563d6b57a111948a46ba3412a8e06f41234784aecb0b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^