Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7e0197645106b0cc39b7daa0e8503e549002593aeab3dd7f2c1ed810dff21764:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^