Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 327613ea05da7475781ebf7a46ebd4193b32abf025959ac430ba36198e269c08:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^