Hello,

Apologies for the waiting time.

 This error can happen if you used an add-on to create a table, for example, if you had an integration with a Form Plugin;

or if you previously had our Premium Version of wpDataTables which has some additional table types that are not available in free/Lite Version, and then if you removed or deactivated that add-on on your site, or if you somehow downgraded from Premium to Lite, but have a table which is not available in Lite, you would get this error. 

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Can you please confirm what is the table type of the shortcode you have on this page?

If you had a Manual Table - this table type is not available in our Free Plugin Version;

so if that is the case, this will certainly solve the issue if you purchase any premium Licence.

The best way to isolate what table type you have is :

1. First edit your WP Page and check what is the Table ID on our Shortcode.

It will be something like :

[wpdatatable id=1]

Just check what is the actual Table ID on your Page.

2. Now, go in the Back-End of wpDataTables, then check what does it say as the "Type".

If it says  "Manual" or "SQL" , then if you get any premium Licence and install the premium version of the Plugin, these tables will load for you.

But, if it says something like "Gravity", or "Forminator" - for that you would need premium wpDataTables but also additionaly a premium Form integration add-on ( depending what kind of tables you have).

So please check which Table types you have - for any Manual or SQL Query based Tables, they are included with any Premium licence ( Basic, pro or Developer);

but if you see any Form integrated Tables ( Gravity or Forminator) for them you need additional premium Add-on to be purchased.

Let me know how it looks and we can advise further if needed.

2. You mentioned that the issue is not present if you install a premium version after 7.1xx.
Our current latest premium version is 7.1.1, so please keep this one installed.

The 3.4.XX is our free/Lite Plugin version, so if you somehow downgraded to the Lite Plugin, this would explain the issue.

I can see you have an active license, so if that happens, please follow the steps explained here, it is a step-by-step explanation of how you can safely remove the Lite version and install + activate the Full version.

Let us know if you have any questions.