Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f049c70813e6bb36019e9173b193dfab81a9d7d4493590686ec2e329a16f00af:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^