Hi Witold,

Firstly, I would like to sincerely apologize for the delayed response as we have been experiencing an unusually high number of tickets. I am sorry that it has taken longer than usual to respond to your concern and your patience is highly appreciated.

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Can you please check what is your currently installed PHP Version of the Hosting server?

You can check this in our Plugins Dashboard, under the "System Info" tab in back-end.

Our developers are working on fixing some PHP warnings we found in the latest PHP versions,

but you should not have any functionality issues on your site.

Can you please check do you have the WP_DEBUG set to 'true' in your wp-config.php ( this is usually located in your root site folder on FTP)?

If so, can you set this to false and check if the error does not come up in that case?

These warnings ant notices can come up when you have WP_DEBUG enabled,

but our developers will launch a new update during October that should fix most of them/we hope all of them,

but for a live site the DEBUGGER should be disabled anyway, so you should prevent any PHP warnings to show.

Let us know if that helps. Thank you.

Hi Witold,

Just following up,

wanted to also check which wpDataTables version you have installed,

do you have our latest 5.8.2 ?

If not, please update the Plugin because our developers fixed a lot of PHP warnings in the latest version.

If you still see the same PHP warning message on the Page after that,

please check if you got the WP_DEBUG mode enabled on your site,

disable it,  refresh the page again, and check if the warning is gone.

If that is the case, our developers are aware of some PHP warnings and notices,

that should be fixed in the next one or two Updates, which will happen during October.

We will certainly be here if you have any additional questions.

Thank you.