Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c44b134f769bf84124e7d4b41bf36da09b1094284438d858964de7b7b0fd5ba8:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^