Provided og:image url encountered an unknown error

Question

Yesterday I attempted to share a web page on Facebook, specifically https://share.novamanus.com/ad/659, however this did not preview correctly on Facebook. When I attempted to scrape this with the Facebook Open Graph Debugger I saw an error I've not encountered previously.

Provided og:image url, https://novamanusprod.blob.core.windows.net/nmphoto/thumb_aa76caf4-f394-402a-a84a-58124222b6b4.jpeg encountered an unknown error. 

There was no additional information elaborating about what was going on. The response from the web page was HTTP 200.

I could at the same successfully access the image url directly, but attempts to re-scrape the page with the Facebook Open Graph Debugger resulted in the same error message.

What could possibly be causing this? 30-40 minutes after this attempt everything worked perfectly. I've not been able to reproduce the issue thus far, nor has Azure blob storage logs told me anything.

Answer 1

I've encountered this same error and I checked the docs.

According to the documentation it recommends:

3. Optimize images to generate great previews Image Sizes Use images that are at least 1080 pixels in width for best display on high resolution devices. At the minimum, you should use images that are 600 pixels in width to display image link ads. We recommend using 1:1 images in your ad >creatives for better performance with image link ads.

https://developers.facebook.com/docs/sharing/best-practices#images

Since adding an image which has the minimum width of 1080px width this resolved my problem.