Hello,
As you can see from the error logs you have 2 types of errors:
1) Memory limit error
PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 8183808 bytes) in /public_html/wp-includes/functions.php on line 5219
2) Error of the Litespeed cache plugin
Fatal error: require_once(): Failed opening required ‘/public_html/wp-content/plugins/litespeed-cache/src/debug2.cls.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’) in /public_html/wp-content/plugins/litespeed-cache/autoload.php on line 35
So, contact your hosting provider to increase the memory limit and also Litespeed cache plugin author.
Regards