i am not sure this is issue with template or with server.. this is the issue i am facing from the date of purchase this template... can u help me to solve this??

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@Ghany
Google analytics code, check their documentation.

Cookie all = done , error was related to google analytics?

I am not getting that error every time, only getting some times

@Ghany
Ah the second one, not sure what does it mean, PHP file cannot fail to load...

And it was causing to delay in page loading time also... How to solve this? Please help me bro.

@Ghany
This error description does not tell anything. Write here step by step how to get it.

Bro i dont know anything aboutthis tomorrow i will send debug file. I think it was issue with cookies.

@ghany
No debug file is required, send steps how to get issue.

yes i found that, some times accepted data not loading then i am getting 500 error, i mean cookies not loading some times. ( some times working good but some times not working good)

for more information,
1. i clicked on vehicles and vehicles was stored in searchbar
2. when we cliked icon beside search bar too clear cookie then also i am getting 500 error in inspect elements of chrome...  i think this is the reason my site was slow comparing to u r site...

i hope u understand what i am trying to say...

@Ghany
This would be true only in case you would everytime push this button.
Reason is same as for Print Ad plugin, on your server this file cannot be opened:
http://classibook.com/oc-content/themes/zara/ajax.php

But if you check our demo, you should get empty page:
http://zara.mb-themes.com/oc-content/themes/zara/ajax.php

Contact your hosting provider.

if i push to delete then i am getting 500 server error, but with out pushing to delete then also i am getting issue... my server providers dont know about this requirements if we tell them what need to install in server then they will do that  if u know anything about this requirements please inform me.. and this is causing by htaccess file? please check that i will send u mail