Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 736550f4da341347425d5b2db9f878f6ee8f47d05ff55e03a27076cc4858aa96:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^