Fixed error during the upgrade process

app/Controllers/DashboardController.php

@@ -9,9 +9,6 @@ use Slim\Http\Response;
 class DashboardController extends Controller
 {
 
-	const PER_PAGE = 21;
-	const PER_PAGE_ADMIN = 25;
-
 	/**
 	 * @param Request $request
 	 * @param Response $response

app/Database/DB.php

@@ -89,8 +89,7 @@ class DB
 	 */
 	public static function doQuery(string $query, $parameters = [])
 	{
-
-		return self::getInstance()->doQuery($query, $parameters);
+		return self::getInstance()->query($query, $parameters);
 	}
 
 	/**