    function _payDebt(uint256 debtAmount, uint256 fee) internal {
      ...

      //@audit-info => output represents the received amount of WETH for the swap
      uint256 output = _swap(
          ISwapHandler.SwapParams(
              ierc20A(),
              wETHA(),
              ISwapHandler.SwapType.EXACT_OUTPUT,
              amountIn,
              debtAmount + fee,
              _swapFeeTier,
              bytes("")
          )
      );

      //@audit-info => Checks if there are any WETH leftovers
      // When there are leftovers from the swap, deposit then back
      uint256 wethLefts = output > (debtAmount + fee) ? output - (debtAmount + fee) : 0;

      //@audit-issue => If any leftover WETH, it deposits them onto Aave!
      //@audit-issue => Once the WETH is deposited in Aave, the Strategy won't be able to pull it out.
      if (wethLefts > 0) {
          _supply(wETHA(), wethLefts);
      }
      emit StrategyUndeploy(msg.sender, debtAmount);
    }
    function _payDebt(uint256 debtAmount, uint256 fee) internal {
      ...
      ...
      ...

      //@audit => Instead of supplying WETH to Aave, use it to repay more debt
      if (wethLefts > 0) {
    -     _supply(wETHA(), wethLefts);
    +     _repay(wETHA(), wethLefts);
      }
      emit StrategyUndeploy(msg.sender, debtAmount);
    }
