Internal error

PHP Notice: A non well formed numeric value encountered

ErrorException: "PHP Notice: A non well formed numeric value encountered" in ROOT/wd/classes/DbObjectListController.php at line 358
#0 ROOT/wd/classes/DbObjectListController.php(358): handle_errors(8, 'A non well form...', '/mnt/web318/a2/...', 358, Array)
#1 ROOT/wd/classes/Controller.php(265): DbObjectListController->handle(Object(PageContext))
#2 ROOT/wd/classes/Controller.php(303): Controller->process(Object(PageContext))
#3 ROOT/wd/classes/Controller.php(321): Controller->renderComponent(Object(PageContext), Object(WebsiteDbObjectListController), 0, Array, Array)
#4 ROOT/wd/classes/Controller.php(245): Controller->renderComponent(Object(PageContext), Array, 'CONTENT', Array, Array)
#5 ROOT/index.php(56): Controller->process(Object(PageContext))
#6 {main}