kingstorelite2.x theme Issue:Undefined variable: registry..

I just downloaded kingstorelite2.x theme and applied Opencart2.2.x,
theme got installed successful,but when i go to my store front page am getting below error

Notice: Undefined variable: registry in /home/cartrowc/public_html/catalog/view/theme/kingstorepro/template/common/footer.tpl on line 2
Fatal error: Call to a member function has() on a non-object in /home/cartrowc/public_html/catalog/view/theme/kingstorepro/template/common/footer.tpl on line 2

Can you please help me, why am getting this,
prior to this theme, my store was working fine with my last tawk extension installation but problems got started with new kingstorelite2.x theme.

Sure, because, this Theme is just not prepared to handle some of the Extensions, you've installed already.
But it's not possible, to assist you. It's like the Theme Creator mentioned on the Extension Page in the Comment
Section, one would have to know, and use, in detail, what someone uses, otherways, it's mostly just a waste of
(ever costly) time, trying to find out.
Therefore, remove ALL, what you have added on Mod's, and start again, by testing one MOD after the other, by use
of the Custom Theme, to find out, wich one does produce your Errors. Then, either decide either to keep the Theme,
or then the Mod. Or get a (paid) hold on to the Creator, to get it CUSTOM-fixed.
Good Luck anyway...
Ernie

PS: And don't forget, to remove all your cached Content - Files, before each step of retrying again,
including your Browser Cache, otherways, you'll never find out!