Project module does not work after upgrade to 7.8.

Project and Project Template functionality does not work after upgrade from 7.4.x to 7.8.2:

Can not create new project template
Can not create new Project tasks for new project or using project template
Can not edit existing Project Tasks in Project Template

Log file Errors
Mon Mar 13 18:01:53 2017 [21025][1][ERROR] Unable to get proper side for link project_name_link
Diagnostic file attached

Centos 6.5
Php 5.6.3