Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 05c216d7faf3f95fc87706d6344361aed70df9b3839e208cf265e1af6faf5047:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^