When writing in topics in our Discourse site, when pasting some links, Discourse cannot retrieve OpenGraph (OneBox) information. We get an error like this (see also in screenshot): >Sorry, we were unable to generate a preview for this web page, because the following oEmbed / OpenGraph tags could no…

[图片] wlandgraf: When writing in topics in our Discourse site, when pasting some links, Discourse cannot retrieve OpenGraph (OneBox) information. We get an error like this (see also in screenshot): Hi there - i tested that particular link you posted and it oneboxes as expected. clearly this is…

@Lilly thank you for your response. I have version `2026.01.0-latest`. I can update to `2026.2.0` of course, but my version is not that old. Yes, all other oneboxes work in my forum. Just that ones don’t work. About my onebox settings, they are all default. If I click “Only show overriden” nothing…

Ok, I found the problem, it looks like Discourse server doesn’t have the recent certificate chain used by the server.

Discourse 为什么无法检索 OpenGraph 数据？

支持

wlandgraf (Wagner Landgraf) 2026 年3 月 11 日 14:27 4

好的，我找到了问题，看起来 Discourse 服务器没有使用服务器的最新证书链。

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Link preview not working for specific site Support	10	2424	2019 年12 月 13 日
Onebox error but OG tag present Support	2	530	2021 年1 月 3 日
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Discourse 为什么无法检索 OpenGraph 数据？

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