Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 25112d2429cae1f2c3f3f992d384b837f12c72ff1ea754636b9dade03c0e8e48:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^