"Unable to generate a preview for this web page because the following oEmbed / OpenGraph tags could not be found: description, image"

support
1

Hi there, I’m trying to figure out why .webp images aren’t being oneboxed on my instance, whereas they do work here on Discourse Meta. For example, this one:

image
image802×31 5.75 KB

1536×1024 630 KB

On my instance it throws an error in the preview:

“Sorry, we were unable to generate a preview for this web page, because the following oEmbed / OpenGraph tags could not be found: description, image”

I don’t care so much about the preview, but it is a problem that it’s only generating a link to the image and not actually displaying it. I don’t understand why it works here and on other Discourse forums I use, but not on mine. The only relevant setting I can find is:
authorized extensions = jpg, jpeg, png, gif, webp, pdf

2

Hmmm :thinking: that looks like this:

3

Hmm interesting, thanks. It looks like the same symptoms, but I don’t think it’s the same cause. I’m not using a proxy, and at any rate all the .webp links I’ve tried work here but the same ones fail on my forum.

4

When did you update your discourse version? There was a fix yesterday

2 Likes
5

Wow, what a coincidence! I was about a 7 or 10 days behind the latest commits. I just updated, and all of the new images I’ve tested seem to work:

https://www.gstatic.com/webp/gallery/4.sm.webp

https://filesamples.com/samples/image/webp/sample1.webp

https://www.gstatic.com/webp/gallery/1.sm.webp

However the URLs that I tried previously seem to be cached or something, because they’re still giving the same error.

6

You will need to rebake old posts with those links for it to onebox.

7

Hmm, no, I mean trying to create new posts with those same URLs I was testing before are throwing the same error.

1 Like
8

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