Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f8ef2652c68f4b4037a911f51bfce99bfddac4392020a3d3ff75998306d269a1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^