Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e7376c2f819e61eb2a19c4663b1d526548046340594c3f01d8bce7d6a51fc438:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^