Hi all,

In my previous post, just a minute or two ago, I asked something about articles. In that post, I put this URL:
http://vanpoppelmontage.nl/veranda-s/10-verandaprojecten/14-veranda-optimaal-antraciet

As you see, with the ugly Ids in it.
I know this, and I followed the instruction on this link a few times now, with success:
https://joomlaseo.com/blog/how-to-remove-id-s-from-your-joomla-url-s

But in this case, after setting 'Sef Advanced Mode' to Yes, I get an error:
404 COM_CONTENT_ERROR_PARENT_CATEGORY_NOT_FOUND

Maybe this is 'too much off topic' here, on the other hand, maybe this is something that we could all encounter.
Does someone know how to deal with this?

Thanks!
With kind regards,
Stefan