Mautic 2.7.1 Notice Inputhelper

Does anyone know what this notice means and how I can fix it:





mautic.NOTICE: PHP Notice - Array to string conversion - in file /var/www/mautic.site.com/htdocs/app/bundles/CoreBundle/Helper/InputHelper.php - at line 314 [] []



thanks

Does anyone know what this notice means and how I can fix it:

mautic.NOTICE: PHP Notice - Array to string conversion - in file /var/www/mautic.site.com/htdocs/app/bundles/CoreBundle/Helper/InputHelper.php - at line 314 [] []

thanks