Thank you very much dears
Do I need to do anything now
Best regards
Those look like they are coming from a mod or custom code. They are not necessarily a problem, so if everything's working and you can live with those messages being logged, then you don't have to do anything.
If you do want to stop the messages you could try asking the mod developer, or if you have access to your php.in file you might be able to change error_reporting to remove E_STRICT. Edit: or maqybe you can put it in htaccess, as RichieBoy67 mentioned above.