Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c635b9637e23c9e0ca19cd75d9bb4f95519575423824fe815c280a0948811476:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^