Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 807155c27c5ad4ac08a32972aaa8fd685a26d5542455c1c02ca2ad576cac0959:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^