Hi @pareshmithra,
I’m terribly sorry, but the problem seems to be the PHP-version you’re using. As of version 1.3.0 I’ve officially dropped php 5.3 (and unofficially as of 1.2.4).
The minimum requirement is now 5.6. I see I’ve forgotten to update the readme in 1 place, will be updating that now. But you can see on the plugin-page that the minimum is now 5.6.
Also, I should really suggest you update to at least php7.1. First off, it’s way faster that php 5. But also, php 5.4 has no more security patches. It’s has been EOL for some time. And php 5.6 only has support till the end of the year.
Again, I’m sorry for the misinformation on the plugin description. And I hope you are able to update. If not, you should revert you’re version to 1.2.3 for now.