Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> df108d69dcf2c3158cc10a0ac949e45ab1702730c62df4261ad525cbb8e8a824:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^