Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4aade746b8efe9ce302fee5049fd536fdfda8f199a9011bfa2d597e4afad5546:16:32
   |
16 |                                 var total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^