Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9e67caa0703e5eeb826a33faa2680fb368b1cee2ecf30789b552777280eafa31:15:8
   |
15 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^