Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b424b3c3ee4e7a0b03039b4e363020d91452775f96d32a74cdfac39e278c715e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^