Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 72552ca6596c843a98860511c8358cb8712575b19db5d956e84448386983bff3:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^