Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1b411843c91ced2621feea072147339e18b152dcfb54ed2be7ce1d5ecb834386:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^