Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7523a52a9e243a8773bf8a814e55dd1752fef768b76b73c449a9b09091f75805:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^