Http 500 error after uploading files

Need Help
1

I uploaded my site backup files from another domain, after extracting the content and setting up the database I am getting this error message:

This page isn’t working is currently unable to handle this request. HTTP ERROR 500.

these are the errors I am getting from apache error logs:

I have deleted the cache folder from the previous site

PHP Fatal error: Class 'ErrorHandler' not found in /home/studycliq/public_html/lib/Cake/Core/App.php on line 957
mmap cache can't open /home/payvalue/public_html/lib/Cake/Error/ErrorHandler.php - Permission denied (pid 18797)
mmap cache can't open /home/payvalue/public_html/lib/Cake/Error/ErrorHandler.php - Permission denied (pid 18797)
mmap cache can't open /home/payvalue/public_html/lib/Cake/Configure/PhpReader.php - Permission denied (pid 18797)
mmap cache can't open /home/payvalue/public_html/lib/Cake/Error/ErrorHandler.php - Permission denied (pid 18797)
PHP Warning: include(/home/payvalue/public_html/lib/Cake/Error/ErrorHandler.php): failed to open stream: Permission denied in /home/studycliq/public_html/lib/Cake/Core/App.php on line 547
PHP Warning: include(): Failed opening '/home/payvalue/public_html/lib/Cake/Error/ErrorHandler.php' for inclusion (include_path='.:/opt/cpanel/ea-php56/root/usr/share/pear') in /home/studycliq/public_html/lib/Cake/Core/App.php on line 547
PHP Fatal error: Class 'ErrorHandler' not found in /home/studycliq/public_html/lib/Cake/Core/App.php on line 957
2

‘payvalue’ to ‘studycliq’

Delete the cache files.

Maybe you have mentioned document root somewhere, try to get rid of it.

Information too less to draw any conclusion.