Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3775e3716a475e186b3f7dad39ee0c5d649b835334e3f626b12a55475a715a13:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^