Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3e51a541bf16570bb09b3b8da22c7cc2c306f136c91a419591039cb3136b5ed8:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^