Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ee2402c77a76b64d4d9a01714899bee0b7b93f076abec2da7d8890bbdf964ab2:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^