Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e04fb4473eb84619b1396b105d74379fd056489d1ad307ca87a357cccba21d92:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^