Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 09ed31c112cea2afc81d2e547a64fc2a6a6027259ae3d91204852f7028b07087:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^