Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> cbbab055ff189e1dc2469ace7a2cdf953ed8bd0809ad8516656d931237d9f460:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^