Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 87066bc83da9d10bda49f95192a01aed17bdc3501fdff1db26bb4aca2d4c6414:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^