Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fe5db938dba69eb4df25a3f238487974a8d911c6f7607ba5198418c84ae9540f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^