Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 801f03d285146dc72ab8f05b08f84c30a2052ae4449f5627f57a03c174c22bca:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^