Updating a Content object via Content Service results in following error in the logs, when a ezurl field value is empty.
app.ERROR: URL with ID '1391' not found
the corresponding entry in the ezurl db table contains this:
I actually got more than one entry with the URL hash d41d8cd98f00b204e9800998ecf8427e and NULL as url value.
What I did to update the Content object: