Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8edef75eb40a967a7599ec4a445454056382fa821d0e2cc90a4aedff18f71d1c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^