Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c87481c2643976738493a0a5505ab5094265f9d24175ad74b0e87d84b527f97f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^