Native XML Plugin not found

I am an administrator of a journal that uses OJS / PKP. I am asked to submit XML files to an organization that indexes our journal. On the journal administrative pages, I click Tools. I then click the Native XML plugin. After clicking that plugin, I receive the following message:

Not Found
The requested URL /witness/index.php/witness/management/importexport/plugin/NativeImportExportPlugin was not found on this server.

What next steps should I take? Describe the issue or problem
Please tell us what happens and what you expected to happen.

What application are you using?
3.3.0.14

Additional information


Hi @thomass,

Your answer to your question is here.

Best regards,
Josh