Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b84aae70b1702b9403c1a7481ff6640a649b6704f68d33b545caa8ba40764c62:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^