You're probably missing a semi-colon in one of your *.js files. Can you check them and let me know if that's the case?
– Arun Kumar MohanAug 18 '16 at 06:42
@PradeepSapkota, Check the last answer in [this](http://stackoverflow.com/questions/30422437/execjsprogramerror-unexpected-token-punc-expected-punc-when-running) question. You can find the exact line where the error occurs. Looks like you're missing a comma.
– Arun Kumar MohanAug 18 '16 at 06:56
The problem was that there I left some brackets open in code. And I added to gems. I fixed the code there was still problem. When I removed those gems. It works fine. Thanks @ArunKumar and all.
– Pradeep SapkotaAug 18 '16 at 07:03