Mendeley citation issue

Hello everybody,

I am working with Mendely desktop (1.19.1) and LibreOffice on Linux BionicBeaver.

When I*am inserting citations, this message appear in place of the citation:

{Formatting Citation}

Here is the metadata that are given by the line of text:

Has it happen to you?

Is anyone know what could be the problem?

Thanks for the help!