Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6e82642dfdc093b3d07be2b150ba35bdc089757c340b39aadf5132212b1f78c4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^