Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 75514c11ab95b166f945cc6005d46cd9e56f4da678a0c8b7ba1f86517128f550:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^