If you receive this error when trying to create or submit changes to an asset, there may be
<o:p> tags in the source code of your asset, likely in the source code of the WYSIWYG editor, that will need to be removed or converted to regular
<p> tags before the asset can be submitted.
Usually these tags are leftovers from pasting formatted content from Microsoft Word into the WYSIWYG editor. To avoid this error in the future, you can:
Enable the Edit > Paste as text option in the WYSIWYG and then paste your content.
Paste the content into a plain-text editor like Notepad, TextEdit, or any code editor to remove formatting prior to pasting it into the WYSIWYG.