Thanks for your advise. I disabled plugins and themes by renaming the directories, but the error did not go away. I enabled debug mode and it gave the following message. How should I resolve it now ?
Warning: require_once(/home/abc/domains/abc.com/public_html/wp-includes/cache-compat.php): failed to open stream: No such file or directory in /home/abc/domains/abc.com/public_html/wp-includes/load.php on line 622
Fatal error: require_once(): Failed opening required ‘/home/abc/domains/abc.com/public_html/wp-includes/cache-compat.php’ (include_path=’.:/opt/alt/php72/usr/share/pear’) in /home/abc/domains/abc.com/public_html/wp-includes/load.php on line 622
There has been a critical error on your website.
