Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 19340dd6331e8b7a8671579121db20c5a9722e1476bc6cfb464376fb38fc7332:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^