Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e7c198bc9e495d82c4ffa40287f508324e0374773763c805734e838bf2acb8a7:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^