Warning message in search result page

Hi and thanks for this great plugin.

When i seach for an image (in this case “prova.jpg”, description/alt text: “immagine di prova”) i get the right thumb but just up the thumb i get this message:

Warning: array_map() [function.array-map]: Argument #2 should be an array in /web/htdocs/www.mysite.it/home/archivio-fotografico/wp-content/plugins/media-search-enhanced/public/class-media-search-enhanced.php on line 251

Warning: Invalid argument supplied for foreach() in /web/htdocs/www.mysite.it/home/archivio-fotografico/wp-content/plugins/media-search-enhanced/public/class-media-search-enhanced.php on line 252
immagine di prova

What is this about?
Thank you

Best regards

https://wordpress.org/plugins/media-search-enhanced/