Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4b9fe4011b296441030463468a2c17dfd6d2413c180889d3a5aab5a3453d988e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^