Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2c39112e430a4ae221cc0b9c02cb825ef986534901ca715747067e19ff82a4af:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^