SERIOUSLY UNABLE TO LOGIN TO MY ADMIN PAGE

[ams4u04]

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"

[abolabo]

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"

please check is file public_html/core/lib/exceptions/exception.php presents.
If not  you can download it here

[ams4u04]

exception. Php file is there... But error is same as I mentioned.

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"

[abolabo]

did you tried to replace it?

[ams4u04]

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