Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 824c0aa1273346088f76c27cfe600a6970e06ce80881cc0374f6696140cc2c58:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^