Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 82d9d1eee8290056862c5ae289bd2907a987aba88525536a441d326fbee15997:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^