Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 80c9d29d277aba19789b75fb5e3a920880693ac2a672b5dff68c068c7e41bc72:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^