Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c33baa41e45af571d093f29028857d8f255008bcc583c04ce8895151a9b8bd4e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^