Yajra Datatables issues with Laravel 5.1

sukh82

I am facing a issue in Yajra data tables. I configured the demo it works fine. But when i followed the steps and configured in my own application it does not work properly. In demo it uses 5.0 Laravel and currently i am using Laravel 5.1. So may be that would the reason not sure

The problem faced is when i add 6th coloumn in the table it gives 404 error . Everytime it doesn't give such error , but its inconsistent behavior . As it works sometimes and sometimes not.