Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 040a586d1041f8a45b728507c17d3aeb65fbe5dba6f3443bfad40bdb2a98dd91:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^