genemu_jqueryautocomplete_entity Does not load data

[ArchTaqi]

I have install this bundle using the documentation and wanted to use auto-complete functionality in my form.

 ->add('course', 'genemu_jqueryautocomplete_entity', array(
                'class' => 'PNC\CoursesBundle\Entity\Courses',
                'property' => 'courseTitle',
))
``
but on rendering the form on front end, the data doesn't load neither the error arises. I tired many solutions provided on github, but doesn't work. I am using symfony 2.7.