Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 938cd8631f1110e8f1f99df167179e0eb7c633d7de54417b256a33fcad065710:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^