Hi there,

I checked it an from what I can see these portfolio items have something added in their shortcode form which is not letting them load properly and I don't think they are from WPBakery. I could see you have plugins for WPBakery to transfer the site or use addons, they could be causing all this as it's not a theme issue or WPBakery issue, it is coming from a 3rd  party plugin which caused a mess in your WPBakery grids.

I created a new item and named it test, added the same grid which is on K+P Svatba na Rusavě (2020) but cleared it from these codes, it seems to work just fine here.

If you edit these pages and turn on Classic Mode, you will see codes like these which are causing all this:

gap="5" style="all" items_per_page="10" element_width="4" button_style="" button_color="" button_size="" item="masonryMedia_Default" btn_title="Načíst více" btn_style="flat" btn_gradient_color_1="turquoise" btn_gradient_color_2="blue" btn_gradient_custom_color_1="#dd3333" btn_gradient_custom_color_2="#eeee22" btn_gradient_text_color="#ffffff" btn_custom_background="#ededed" btn_custom_text="#666" btn_outline_custom_color="#666" btn_outline_custom_hover_background="#666" btn_outline_custom_hover_text="#fff" btn_shape="rounded" btn_color="blue" btn_size="md" btn_align="inline" btn_button_block="" btn_add_icon="" btn_i_align="left" btn_i_type="fontawesome" btn_i_icon_fontawesome="fas fa-adjust" btn_i_icon_openiconic="vc-oi vc-oi-dial" btn_i_icon_typicons="typcn typcn-adjust-brightness" btn_i_icon_entypo="entypo-icon entypo-icon-note" btn_i_icon_linecons="vc_li vc_li-heart" btn_i_icon_monosocial="vc-mono vc-mono-fivehundredpx" btn_i_icon_material="vc-material vc-material-cake" btn_i_icon_pixelicons="vc_pixel_icon vc_pixel_icon-alert" btn_custom_onclick="" initial_loading_animation="zoomIn" grid_id="vc_gid:1664630261857-9a5aae02-1f91-10" include="" btn_el_id="" btn_custom_onclick_code=""