Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> edca7c421440d1a41498ca1453e869c9ac397e902f1299ee372a7dad6f4b8c40:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^