Hi, This error seems to be because of a bad cq:cloudserviceconfigs node
at the pages. It is likely you have this config at a parent level and
all the child pages inherit from it and have this issue. Can you track
this back to the parent page, open the page properties and edit the
cloud service configs, add some extra config, and save. Then remove the
config and save again. This should save the node correctly.
Regards,Manvi Sharma