try to apply maxsize limit in DB

zimbraSingle.php

@@ -819,8 +819,7 @@ function zimbraSingleUpdateQuota($params) {
             ->join('tblhostingconfigoptions', 'tblproductconfigoptions.id', '=', 'tblhostingconfigoptions.configid')
             ->where('tblhostingconfigoptions.relid', '=', $params['serviceid'])
             ->where('tblproductconfigoptions.optionname', 'like', 'addonQuota%')
-            ->select('tblhostingconfigoptions.id')
-            ->select('tblproductconfigoptions.qtymaximum')
+            ->select('tblhostingconfigoptions.id', 'tblproductconfigoptions.qtymaximum')
             ->get();
         logModuleCall(
             'zimbrasingle',