Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 101f36db391be8983776136c5e05ed045ea647c211f41618ca71c0fb63d5e6d9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^