Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 399675048076202c010dee4918a3e0c9433e08eb3b9ec7ab4721de92949316e5:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^