Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4190821e853e4d5e95c434acb0150e291496369772904110c4c61405b471dce7:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^