Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 892fc322a3cc83bdefeaa56e545dd0df078715323814a1b5d5702dfa370db116:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^