Duplicate Facebook OG meta tags, Facebook doesn’t show featured image when post is shared?

Facebook uses tags called OpenGraph “OG meta” to show useful information about your article when shared on Facebook, you can use one set only of OG meta tags in your website, so make sure you don't have any other plugin that load OG meta in your website. (like WordPress SEO plugin for example.)

To disable OG meta option from your theme, please check (Theme TiePanel >> Posts/Article Settings >>  OG Meta)

To disable OG meta option from WordPress SEO plugin, please check (WordPress SEO >> Social >> Facebook >>Add Open Graph meta data)

Use this tool from Facebook, to clear cached pages of your website from Facebook, and to debug any Facebook OG meta issues.