Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7dff347ac2286cb06b2f8148440540b46304fea8a00e46d18aff2f5a0814afd0:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^