WordPress upgraded to 6.8 causing error

Hi,

Our website recently got auto updated to WordPress 6.8 and soon after this we received an email that
“An attempt was made but your site could not be updated automatically. Updating is easy and only takes a few moments…..”

Since after this our website domain wasn’t working, then we checked error logs through FTP login and found these.

[Wed Apr 16 09:50:38.288397 2025] [proxy_fcgi:error] [pid 1491261:tid 1491359] [client 66.248.202.12:60924] AH01071: Got error ‘PHP message: PHP Warning: require(/opt/bitnami/apache/htdocs/wp-includes/class-wp-speculation-rules.php): Failed to open stream: No such file or directory in /opt/bitnami/apache/htdocs/wp-settings.php on line 410; PHP message: PHP Fatal error: Uncaught Error: Failed opening required ‘/opt/bitnami/apache/htdocs/wp-includes/class-wp-speculation-rules.php’ (include_path=’.:/opt/bitnami/php/lib/php’) in /opt/bitnami/apache/htdocs/wp-settings.php:410\nStack trace:\n#0 /opt/bitnami/apache/htdocs/wp-config.php(107): require_once()\n#1 /opt/bitnami/apache/htdocs/wp-load.php(50): require_once(‘…’)\n#2 /opt/bitnami/apache/htdocs/wp-blog-header.php(13): require_once(‘…’)\n#3 /opt/bitnami/apache/htdocs/index.php(17): require(‘…’)\n#4 {main}\n thrown in /opt/bitnami/apache/htdocs/wp-settings.php on line 410′

[Wed Apr 16 09:54:05.796777 2025] [proxy_fcgi:error] [pid 1491261:tid 1491344] [client 43.166.239.145:49998] AH01071: Got error ‘PHP message: PHP Warning: require(/opt/bitnami/apache/htdocs/wp-includes/speculative-loading.php): Failed to open stream: No such file or directory in /opt/bitnami/apache/htdocs/wp-settings.php on line 411; PHP message: PHP Fatal error: Uncaught Error: Failed opening required ‘/opt/bitnami/apache/htdocs/wp-includes/speculative-loading.php’ (include_path=’.:/opt/bitnami/php/lib/php’) in /opt/bitnami/apache/htdocs/wp-settings.php:411\nStack trace:\n#0 /opt/bitnami/apache/htdocs/wp-config.php(107): require_once()\n#1 /opt/bitnami/apache/htdocs/wp-load.php(50): require_once(‘…’)\n#2 /opt/bitnami/apache/htdocs/wp-blog-header.php(13): require_once(‘…’)\n#3 /opt/bitnami/apache/htdocs/index.php(17): require(‘…’)\n#4 {main}\n thrown in /opt/bitnami/apache/htdocs/wp-settings.php on line 411′

[Wed Apr 16 09:59:29.409194 2025] [proxy_fcgi:error] [pid 1465674:tid 1465771] [client 127.0.0.1:45334] AH01071: Got error ‘PHP message: PHP Warning: require(/opt/bitnami/apache/htdocs/wp-includes/speculative-loading.php): Failed to open stream: No such file or directory in /opt/bitnami/apache/htdocs/wp-settings.php on line 411; PHP message: PHP Fatal error: Uncaught Error: Failed opening required ‘/opt/bitnami/apache/htdocs/wp-includes/speculative-loading.php’ (include_path=’.:/opt/bitnami/php/lib/php’) in /opt/bitnami/apache/htdocs/wp-settings.php:411\nStack trace:\n#0 /opt/bitnami/apache/htdocs/wp-config.php(107): require_once()\n#1 /opt/bitnami/apache/htdocs/wp-load.php(50): require_once(‘…’)\n#2 /opt/bitnami/apache/htdocs/wp-blog-header.php(13): require_once(‘…’)\n#3 /opt/bitnami/apache/htdocs/index.php(17): require(‘…’)\n#4 {main}\n thrown in /opt/bitnami/apache/htdocs/wp-settings.php on line 411′

More like these but we commented these blocks for time being and able to see at least our landing page. Now when trying to login to admin panel its not working and there is error shown as

There has been a critical error on this website. Please check your site admin email inbox for instructions. If you continue to have problems, please try the support forums.

Learn more about troubleshooting WordPress.

Not able to figure out anything what is the issue and how to fix. Need help on this. We need to update our website and pages hence need admin access.

Thanks

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