facebook - Missing thumbnail image in share of Page Tab App url -


i have page tab app on facebook , want promote in timeline, when i'm not getting thumbnail.

i've added in thumbnail meta tag:

<meta property="og:image" content="my_image"/>

but it's still not showing - missing something? link image in app code , points image 111 x 74px in images folder of app, it's not on different site or - , it's absolute link.

the app link here fyi: https://www.facebook.com/valeriecafe/app_451324494932654

any suggestions appreciated.

i didn't know there debugger facebook apps online:

https://developers.facebook.com/tools/debug

i'd missed meta tags out, , way app built not letting facebook crawl once figured out problems works fine. although, facebook seem slow if want change image used thumbnail - needs @ least 24hrs catch up.


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