Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fd2301a50ca644df023cd52273659e5b65d511df1b2b8c813fab01ac6d843499:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^