Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e14ac589f24a68ac259018839dffe37cb9705ddb01c4a0b453ba32d5ef70023a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^