Community Tip - You can subscribe to a forum, label or individual post and receive email notifications when someone posts a new topic or reply. Learn more! X
Seems to relate to groups.
Try to find feature/component number 63 and ungroup everything around it. Then regenerate and check error messages again.
If it does not help, reorder features around it (one up, one down).
And, as always, check dependencies in the reference viewer. Maybe You have to change a reference to a parent or a child.