Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 992b5f627cc9baa5972e4935387bb8e23864058d157138ea491d2748ecc01d35:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^