restore to previous version after 5.5 update failed

Thanks Steve,

I was stuck in maintenance mode and read somewhere that I should delete a file which caused that message so now this is what I get. I think I just need to go back, and update a bit more mindfully!

Fatal error: Uncaught Error: Call to undefined function register_block_type_from_metadata() in ….wp-includes/blocks/archives.php:119 Stack trace: #0 ./volume1/web/mpaulm/wp-includes/class-wp-hook.php(287): register_block_core_archives(”) #1 /volume1/web/mpaulm/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #2 /volume1/web/mpaulm/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #3 /volume1/web/mpaulm/wp-settings.php(540): do_action(‘init’) #4 /volume1/web/mpaulm/wp-config.php(90): require_once(‘/volume1/web/mp…’) #5 /volume1/web/mpaulm/wp-load.php(37): require_once(‘/volume1/web/mp…’) #6 /volume1/web/mpaulm/wp-admin/admin.php(34): require_once(‘/volume1/web/mp…’) #7 /volume1/web/mpaulm/wp-admin/index.php(10): require_once(‘/volume1/web/mp…’) #8 {main} thrown in /volume1/web/mpaulm/wp-includes/blocks/archives.php on line 119
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@paulmy Do you get any error message?

Ummmm… I think you deleted more than you think. Download a fresh copy of WordPress from Unzip locally, then using FTP or the file manager app of your hosting control panel, upload the resulting files and directories to your site.

O! I thought the ‘upgrade’ folder under website/wp-contents with wordpress-5.5-uBPORI/wordpress leading to folders for wp-admin, wp-content, wp-includes and some php files might be the route to recovery?

I did only delete one file, but prior to that the update operation failed mid-way and I took the option to finish the incomplete upgrade which of course didn’t work either.

The “upgrades” folder should be empty. If you find that it’s not, it’s a sign that the upgrade did not complete properly. Time to do a manual update:

Thanks Steve, I followed you advice and all is now working again! PaulM

PS – of course not a restore to previous version but a working 5.5 install!

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