Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e3a2bf4dc584ca35cd544007950e42afa53163e81462c03e21fe361eb3be8ae9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^