Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e62dc3cb045ede9762fea88fc223218b7b37ac57458e714b941944e95a0bed5b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^