Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c13a22d6530cee3d057b8479cd2852cbd675d7463005405479fc6f2a14883191:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^