How can i redirect after i use transaction and throw new \Exception('Error')

How can i redirect after i use transaction and throw new \Exception('Error'); from my code below when i've an error it stop at else{throw new \Exception('Error');} and my if($errors) not working

is their anyway to redirect after throw new \Exception() ?

$errors = false;
    DB::transaction(function () use ($count,$request,$a,$errors) {
        for ($i=0; $i < $count; $i++) {
            $warehouse_products_sell = New Warehouse_products_sell;
            $id_w = $request->input('idw');
            $id_c = $request->get('id_c')[$i];
            $id_p = $request->get('id_p')[$i];
            $qty = $request->input('quantity_box')[$i];
            $price = $request->input('price')[$i];
            $available = $this->check_stock($id_w, $id_p, $qty);
          if($available > 0){

            $warehouse_products_sell->save();
          }else{

            echo "error";
            $errors = true;
            throw new \Exception('Error');
          }
        }
    });
    if ($errors) {
       return redirect('URL');
    }else{
        return 'x';
    }

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