Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a11d23b70e59a25afa21d6b887c1be908ef5c971a338efbbc2c8af9aff321124:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^