No.... I am afraid of lose of data.
Can you help me how to replace

Tomorrow i make some changes in my Abantecart 1.2.11 and php like.

• Few day before i got Error message to change my index.php and config.php permission as it is read and write mode. so i set it to 755 both
• In Cpanal it asked for upgrade my PHP version from 5.5 to 7 or 7.1, so i make an upgradatiion in PHP version.

After doing this i want to login to my admin account, putting my username and password, press on login button within a sec the login page redirect me back to login page again. I try lots of time to login but same problem raises all the time.

Now a time i again change my setting to my older setting also its showing same problem. Can you please help me out from this problem

I got error in Error Log book " mod_fcgid: stderr: PHP Fatal error:  Class 'AException' not found in /public_html/core/lib/exceptions.php on line 50"

after change the code in the following file... there is no change in the result. Till now i am unable to register a new account, guest account is auto disable and register user can not loged in nor placed any of the order.

here i am sending the orginal version of "csrf_token.php" file with this post

Inside error log book it produce "2017-06-07 20:40:59 - App Error: AbanteCart core v.1.2.10 Error: Unable to identify file path to template form/form_csrf.tpl! Check blocks in the layout or enable debug mode to get more details. 10002 in /home/***********/public_html/core/engine/view.php on line 317"