Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 90752944b050cb91e334b9a1eab17307d647807ecc79fe2c4e9fd21db477777f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^