Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 5dadd460ca791f4f85487995c1a8541fbcf765040c1b6e72a1427249912699ed:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^