Categories contains Deleted item

I have a Collection List on a static page linked to Products. When setting the filter to be ‘Categories’ ‘contain’ ‘Collection Name’ I get a message showing ‘Collections contain Deleted items’. The filter seems to be working anyway but I think it is causing other issues down the line so I’d like to get it fixed. I have checked all the Products and Categories and I am sure I’m not pointing to anything deleted. I am unfortunately not able to share the link publicly but can post contextual screen shots. Any help/ideas much appreciated.

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