Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> db17670c22422f2dbaa7513c192b997a9456c48ec711907dca00dea9ef58ec4a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^