CKEditor 5 come with Drupal 10 core if we enable "Video Embed WYSIWYG" (video_embed_wysiwyg) plugin is showing HTML filter errors.
Step 1: Install Drupal 10 enable the video Embed WYSIWYG module.
Step 2: Navigate Config > User Interface > Text Formats and Editors > Filtered HTML > Enable Video Embed WYSIWYG by enabling checkbox.
Step 3: Wait to complete loader and you will get the below error message
"CKEditor 5 only works with HTML-based text formats. The "Video Embed WYSIWYG" (video_embed_wysiwyg) filter implies this text format is not HTML anymore."
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Closed: duplicate
2.5
Video Embed WYSWIYG
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