Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a8ad4017d06de82be206faeea80d381215fa66fe5b12869fef7efc167d0dd348:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^