[Plugin: Unite Gallery] Multiple primary key problem

Hello.

I recently downloaded the Unite Gallery plugin onto a WordPress site I use. It is for a business for which I work. It is only the lite version of the product. I read up on the plugin and I know how to use it, however, each time I try to create a gallery, I receive this error message.

“fetch Multiple primary key defined”

Likewise, I receive the same exact error message when I go to create a category with the plugin.

I do not consider myself tech-savvy in any way and would very much appreciate help. It is proving difficult to educate myself on what “multiple primary keys” are and their role in this issue.

Thank you very much for your assistance!