Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0050541585c2ceb946aac123bf53a1ba71047526474e7e22e6b39c2b3703062d:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^