I'm the creator of the plugin

please search in google with 'error_reporting' and 'php.ini' to understand what I will say.
this notices comes from Php which are saying 'you may have a probleme' but there are not any problem.

In order to don't see this notice but see the warnings :
-modify the local config file like that : $conf['show_php_errors'] = 'E_ALL & ~E_NOTICE | E_STRICT'; Use the plugin LocalFiles Editor in order to do this change.