Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 98776291b82f1dac62009bc631fe359dae38124b0df5d1d1721d06b2ceee2c03:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^