As mentioned, you might want to check your atlassian-confluence.log which is located in <Conf_HOME_Dir>/logs/ in order to further investigate this issue.
If you are running on MySQL server database, most likely the cause of the issue is due Max Allowed Packet configuration which is discussed on our knowledge base article here:
Hope it helps.
I'm Gliffy Technical Support. Could you please open a ticket at http://support.gliffy.com? I'd like to ask you for a copy of your current log file.
PO Box 7775 #35255
San Francisco, CA, 94120-7775
Badges are a great way to show off community activity, whether you’re a newbie or a Champion.Learn more
Planning and grooming sessions all come with their own sets of rules. Team members meet to estimate stories or other work items, all according to an agreed-upon process. And with every session comes ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs