Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c0c29330fdeefe61fbad9fb5dc7b199f41b63b0e92376b835cce7cb786b12935:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^