Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 53935a038891e661a39b5f887abf815565d020ade29f699b9ec8ee488591796d:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^