Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 020f2d7f6b9a1b357daf3dab1e8952a6e0998441baedc47c95ccc4c037ff7fb4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^