Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 24d3a65d0b2d2b2bf60f23692784a66a29b2e8f6200575df367933bea5b2470a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^