Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 82a65b26ecd8cd4078be12bbd439516ced35ec955cea44604e7dce72eac65175:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^