Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8a76114e76722e7c16da2bf07807c170fa5e79c3583b903426d332e8994cde36:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^