Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 94e486974d1eb89b2a67b0dcf4546803c115cbb204fc19b7144d20f2be2dfd73:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^