Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6e66a1a32d8818afe987d1b960ffd2676c20d46d7b9d96abb133224885123ffd:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^