Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2c42d84225a8761925fc93096cec50b27e2673855f1138efb3eda664f3d2b192:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^