Troubleshooting: Server warnings and PHP notices
The website may display "warnings" because your server is set to show such PHP warnings. There is nothing to worry about. We need to keep compatibility with older versions of WordPress as well as older PHP versions.
Follow the nest steps to disable these warnings/notices
If you simply
fileyou should be fine.
In the case you already did that and still have the warnings, you can replace this line from your wp-config.php file:
ini_set('error_reporting', E_ALL );
The wp-config file is located on your WordPress root. It can be edited using your "File manager" from cpanel, or using an FTP client.