Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 389c96962283ee53874e24ae9ec3b791b3c486b2e9a49873ea1bbd930267333a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^