Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 263d9efbd418cfe96802da4be77e078d484425fd103a28decaa6459521e56eb8:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^