failed to open stream

When I try to install the script after setting up the database under CPanel, some error occured:

Warning: main(ABSPATH/wp-admin/admin-functions.php): failed to open stream: No such file or directory in /home/anglofra/public_html/blog/wp-admin/upgrade-functions.php on line 3

Fatal error: main(): Failed opening required ‘ABSPATH/wp-admin/admin-functions.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/anglofra/public_html/blog/wp-admin/upgrade-functions.php on line 3

Here’s the link to the install.php file:
https://207.99.87.50/~anglofra/blog/wp-admin/install.php