Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 51d16359460eceb6e8334fa09f46f08c5312641d580a74fdd39f08f1798931d9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^