[wp-trac] [WordPress Trac] #53061: Vimeo embed not working

[WordPress Trac]

#53061: Vimeo embed not working
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 Reporter:  parzianello   |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Embeds        |    Version:  5.7.1
 Severity:  blocker       |   Keywords:
  Focuses:                |
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 Hi! I'm having difficulty understanding where is the origin of the problem
 in embedding Vimeo videos into posts or pages on a clean install of
 WordPress.

 What happens?

 - If I paste the Vimeo URL into the text, choose the shortcode format or
 open the Vimeo Gutenberg block, the message I get is: "Sorry, this content
 could not be embedded."

 - If I use the iframe code generated by Vimeo and paste it into an HTML
 block, the player displays with no problem. Everything works fine!

 The problem is that I really need to use the Vimeo block because of
 another application I use that demands it as a requirement. Do you have
 any idea how I can find the root cause of this problem? Could it be a bug?
 Vimeo Support tried to help me but they consider an issue in WordPress.
 Embedding YouTube videos is working perfectly in all modes. It is only
 with Vimeo that this problem occurs.

 Information about my installation:
 - Wordpress 5.7.1
 - PHP 7.3.14
 - MySql 5.7.32-35
 - No new plugins installed
 - No new theme installed

 All tests done with a clean web browser (Chrome and Edge).

 Thanks in advance!

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Ticket URL: <https://core.trac.wordpress.org/ticket/53061>
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