PHP Error Time Zone

I’m Using OJS, our error log files suddenly take so much space, then i check it what error caused it, this is the error:
Message: WARNING: strtotime(): It is not safe to rely on the system’s timezone settings.
You are required to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone ‘UTC’ for now, but please set date.timezone to select your timezone.
In file: /home/jurnalbi/public_html/lib/pkp/classes/scheduledTask/

can someone assist me how to fix it? thanks

Hi @FredyDwi,

I’m not sure what to suggest for the specific issue you are encountering, but I would recommend upgrading from OJS 2 if you can, as it is out-of-date and no longer supported. You may find our documentation on upgrading here: Upgrading from OJS 2 to OJS 3

PKP Team