Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2ccc060cd8b1ab05711626333829f0e435043d27f23bc426f763049cc57a668e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^