Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 374cd2c42f307c58fa01339338861d31278db33487069ce277f4ee8b50ff401f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^