Blank page when Not found results with taxonomy widget

Hi and thank you for your useful plugin.
I am using the taxonomies widget which filters post categories and tags. It works fine, but when there are no results matching the selection, the results page is a blank page and I need to show a message saying there were no results and the possibility to add a button to go back or something similar. Is that possible or included in the free plugin or am I missing something? I think this is must be for proper UX.

Thank you

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