Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e52f71cac4d55529847c4caecd5662072b6447b3e8ae0564b52fbff61b997057:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^