Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7858193264c957005ce266d78366a735129a6bcb0be2db02a63dcdacbcba4e95:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^