Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0ce56b3936d336b84f3c1f8ebd786e0bf61777a6b735f6a08b77420ef0895773:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^