Why thumbnail might be wrong for facebook share specific video in gallery

The problem is that you have another og:image instance <meta property=”og:image” content=”https://staging1.clarkcountylive.com/wp-content/uploads/2018/04/gnome-fairy_600.jpg” /> <meta property=”og:image:width” content=”600” /> <meta property=”og:image:height” content=”315” /> set by theme / another plugin and this is the part from video gallery <meta property=”og:url” content=”https://staging1.clarkcountylive.com/dzs-gall-shortcode/?the-video-exampleyoutubevideos=1” /><meta property=”og:title” content=”Youtube 1111” /><meta property=”og:description” content=”content here in the description area in edit gallery” /><meta property=”og:image” content=”http://img.youtube.com/vi/9_P9NYpQHdM/0.jpg” […]