Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 27708a81945154275b63f172e7d7487af8ec589b294b4e0b51495d7df565fc7c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^