Cannot edit or delete categories

The plugin works perfectly, it allows you to add documents without any problems. However, when I create a category for the documents, it does not allow me to edit or delete it.

I access the administration part of the group, documents and I see the list of categories created with 2 buttons: “edit” and “delete”.

When I click on the buttons, nothing happens. The page reloads but nothing else.

The debug log shows no errors.

Any clues as to what could be going on? can the document categories be deleted from somewhere else?