Invalid argument supplied for foreach() in php

[Honza21]

Hello,
I have problem. When I add link for a category of one gallery to article on my new site I can´t see category but only system warning:

Warning: Invalid argument supplied for foreach() in /data/web/virtuals/125961/virtual/www/plugins/content/phocagallery/phocagallery.php on line 898

How can I solve it?

I have joomla 3.4 and phoca gallery 4.2

[Jan]

Hi, is the category parent category or some subcategory?

Which plugin version do you use? Which plugin code did you set for the article?

Jan

[Honza21]

Hi Jan,
it is subcategory.
As I wrote, I have phoca gallery version 4.2.2, implemeted plugin "Button - Phoca Gallery" and "Content - Phoca Gallery" and czech lang pack.
If you have time - I can send you link and I can create test user for you by PM or e-mail, because I don´t know what you mean "plugin code for article".

Mayby you mean this? "{phocagallery view=categories|imagecategories=1|imagecategoriessize=2|hidecategories=6}"?

[Jan]

Are there published and authorized categories in your Phoca Gallery.

Jan