BTW, have you tries to downgrade the forum?
not yet mate running this config thing first for Dima to potentially find something
Also if you have a backup of your site in your local drive (pc), unzip it if it is zipped and search within all files (php files) for
ob_end_flush()
and see what plugin (or theme) use it. It seems to create an issue.
There are several search programs with massive folder search capabilities.
I dont have a recent back up, but i will get this all done now, thanks for the input mate, massivly appreciated!!
This:
[05-Aug-2021 20:08:42 UTC] WordPress database error Commands out of sync; you can't run this command now for query SELECT option_value FROM wp_3cy42zznwz_options WHERE option_name = 'cli_script_blocker_status' LIMIT 1 made by shutdown_action_hook, do_action('shutdown'), WP_Hook->do_action, WP_Hook->apply_filters, Cookie_Law_Info_Script_Blocker->end_buffer, Cookie_Law_Info_Script_Blocker->get_blocking_status, Cookie_Law_Info_Script_Blocker->get_script_blocker_status, get_option, QM_DB->query
Comes clearly from Cookie Law. And it is serious. Disable the plugin.
Also this ob_end_flush could also be from the same plugin.
I see several database errors, comming from other plugins or from i don't know where. And this makes me think, those issues could be a generic db server issue.
For example here is see Yoast as an issue:
[05-Aug-2021 22:09:23 UTC] WordPress database error Commands out of sync; you can't run this command now for query SELECT user_id, meta_key, meta_value FROM wp_3cy42zznwz_usermeta WHERE user_id IN (4958) ORDER BY umeta_id ASC made by shutdown_action_hook, do_action('shutdown'), WP_Hook->do_action, WP_Hook->apply_filters, Yoast_Notification_Center->update_storage, Yoast_Notification_Center->remove_storage, Yoast_Notification_Center->has_stored_notifications, Yoast_Notification_Center->get_stored_notifications, get_user_option, WP_User->has_prop, WP_User->__isset, metadata_exists, update_meta_cache, QM_DB->query
and i doubt that Yoast suffers from that issue.
Also it could be is some conflict (or conflicts) between plugins.
So this is so far as i know and i can help. I;m not a db specialist.
This is the time the forum is slowest