Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d4386101ae53ff33379debf959ba81d9dd76b74e2fbb50766820959eb73648c4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^