Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ee0bea59e07eab2df44663de24d28e649feb3150a4d9e5452d85be6bd4a36597:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^