Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 09df04bff03eeb947c5259432415392214483baa5100e1cf9c0a5a7a379274a4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^