Solution:1
In fact, not you ought to take care of that issue.
The issue is emerging from WP Symposium module’s record. Do you have the most recent rendition of the module introduced? I haven’t checked the actual module, however from the download page they say that the module is viable upto WordPress Version 3.5
Solution:2
That is on the grounds that plan ought to be utilized with a ? placeholder for unconfirmed contentions. Since adaptation 3.5, WordPress has chosen to caution you assuming that you abuse it.
Andrew Nacin (who was the lead designer for 3.5) declared this adjustment of a blog entry on make.wordpress.com:
This wasn’t a choice done softly. We try to avoid pushing PHP alerts into the essences of clients and designers. However, given the potential security chances, we needed everybody to promptly take a gander at how they are running questions. What’s more, obviously, consistently set them up appropriately.